HomeMy WebLinkAbout151 - 02/26/2013 - ADOPTING AN UPDATE TO APPENDIX C OF THE LARIMER COUNTY URBAN AREA STREET STANDARDS PERTAINING TO ''S ORDINANCE NO. 151, 2012
OF THE COUNCIL OF THE CITY OF FORT COLLINS
ADOPTING AN UPDATE TO APPENDIX C OF THE LARIMER COUNTY
URBAN AREA STREET STANDARDS PERTAINING TO
"STREETSCAPE STANDARDS" FOR THE CITY OF FORT COLLINS
WHEREAS, the Streetscape Design Standards and Guidelines ("SDSG") document was
initially adopted in 2001 and was made a part of the Latimer County Urban Area Street Standards
to be applied inside the City; and
WHEREAS, the SDSG provides details for creating streets that are visually appealing as
public spaces and that contribute to the City's distinct identity; and
WHEREAS, City staff has prepared an update to the SDSG, now called the "Streetscape
Standards" for the City, which increases requirements for landscaping in arterial medians and
clarifies and updates information throughout the document; and
WHEREAS, the City Council has determined that the amendments to the SDSG comport
with the principles and policies contained in City Plan, and are in the best interests of the City and,
accordingly, should be adopted.
NOW, THEREFORE, BE IT ORDAINED BY THE COUNCIL OF THE CITY OF FORT
COLLINS that the update to Appendix C of the Larimer County Urban Area Street Standards
pertaining to "Streetscape Standards " for the City, dated December 12, 2012, a copy of which is
attached hereto as Exhibit "A", is hereby adopted for inclusion in the Larimer County Urban Area
Street Standards.
Introduced, considered favorably on first reading, and ordered published this 18th day of
December,A.D. 2012,and to be presented for final passage on the 26th day of February,A.D. 2013.
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City Clerk
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Passed and adopted on final reading on the 26th day of February, A.D. 2013.
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COUNTYStreetscape Standards $ Fort Collmins
LARIMER AREA STREET STANDARDS APPENDIX
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COMMITTED TO EXCELLENCE
Streetscape Standards
February 26 , 2012
City of/00 Fort Collins
Community Development and Neighborhood Services
Planning Division
281 North College Avenue
Fort Collins , CO 80524
970 - 221 - 6376
fcgov. com / cityplanning
For additional copies , please download from our website , or contact us using the
information above .
Acknowledgements
City Council Project Staff Team
Karen Weitkunat , Mayor Pete Wray , Senior City Planner ( Project
Kelly Ohlson , Mayor Pro Tem , Dist . 5 Manager )
Ben Manvel , District 1 Clark Mapes , City Planner
Lisa Poppaw , District 2 Bruce Hendee , Chief Sustainability
Aislinn Kottwitz , District 3 Officer
Wade Troxell , District 4 Sherry Albertson - Clark, Planning Manager
Gerry Horak , District 6 ( Interim )
Kraig Bader , Standards Engineering
Planning & Zoning Board Manager
Tim Buchanan , City Forester
Gino Campana Laurie D ' Audney , Water Conservation
Jennifer Carpenter Specialist
John Hatfield Paul Eckman , Deputy City Attorney
Kristin Kirkpatrick Basil Hamdan , Civil Engineer II
Brigitte Schmidt Becca Henry , Graphic Designer
Andy Smith Aaron Iverson , Senior Transportation
Butch Stockover Planner
Dean Klingner , Civil Engineer III
Sheri Langenberger , Development Review
Manager
Amy Lewin , Transportation Planner
Steve Lukowski , Parks Supervisor
Joe Olson , City Traffic Engineer
Michelle Provaznik , Director of the
Gardens on Spring Creek
Rick Richter , Engineering and Capital
Projects Manager
Bill Whirty , Manager of Parks
Ralph Zentz , Assistant City Forester
Tom Knostman , Pavement Engineer
Consultants
Ripley Design , Inc .
Daman Holland
CITY OF FORT COLLINS STREETSCAPE STANDARDS Pa g e i
Page I ii CITY OF FORT COLLINS STREETSCAPE STANDARDS
Table of Contents SECTION 5
Arterial Streets . . . . . . . . . . . . . . . . . . . . 19
SECTION 1
Purpose and Intent . . . . . . . . . . . . . . . . . 1 5 . 1 ARTERIAL STREETSCAPES MAP . . . . . . . 20
5 . 2 ARTERIAL STREETSCAPE
SECTION 2 DESIGN : STANDARD ARTERIAL
Applicability Ft Use . . . . . . . . . . . . . . . . . 3 STREETSCAPES - MEDIANS . . . . . . . . . . . . . . . . . 22
5 . 3 ARTERIAL STREETSCAPE
SECTION 3 DESIGN : STANDARD ARTERIAL
Project Plan Submittal STREETSCAPES - PARKWAYS . . . . . . . . . . . . . . 36
and Review . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 . 4 ARTERIAL STREETSCAPE
DESIGN : ENHANCED TRAVEL
3 . 1 STREETSCAPE PROJECT CORRIDORS ( ETC ' S ) . . . . . . . . . . . . . . . . . . . . . . . . 36
DESCRIPTION REQUIRED * * * * * * * * * * * * * * * * * * * * 5 5 . 5 ARTERIAL STREETSCAPE DESIGN :
SECTION 4 OTHER SPECIAL PLANNING AREAS . . . . . . . . 37
All Streets . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 . 6 ARTERIAL STREETSCAPE
DESIGN : CONSTRAINED CORRIDORS
4 . 1 STREET TREES . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 AND SEGMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4 . 2 PARKWAY LANDSCAPING - 5 . 7 ARTERIAL STREETSCAPE
TURF - TYPE GRASS . . . . . . . . . . . . . . . . . . . . . . . . . . 12 DESIGN : GATEWAY INTERSECTIONS . . . . . . 38
4 . 3 PARKWAY LANDSCAPING - 5 . 8 ARTERIAL STREETSCAPE
ALTERNATIVES TO TURF - TYPE GRASS . . . 13 DESIGN : COMMUNITY ENTRANCE
4 . 4 SIGHT DISTANCE TRIANGLES GATEWAYS ( I - 25 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
AT INTERSECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 14 SECTION 6
4 . 5 LOW IMPACT DEVELOPMENT - Collector And Local Streets . . . . . 43
STORMWATER MANAGEMENT . . . . . . . . . . . . . 15
6 . 1 PARKWAY LANDSCAPING . . . . . . . . . . . . . . 43
SECTION 7
Maintenance Standards . . . . . . . . . . 47
7 . 1 TREE MAINTENANCE AND
MANAGEMENT REQUIREMENTS . . . . . . . . . . . . 47
7 . 2 MAINTENANCE RESPONSIBILITIES . . . . 47
7 . 3 ACCEPTANCE OF NEW ARTERIAL
STREETSCAPE PROJECTS FOR
CITY MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 48
7 . 4 GENERAL MAINTENANCE
STANDARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page iii
SECTION 8
Irrigation Standards . . . . . . . . . . . . . . . 51
8 . 1 IRRIGATION SYSTEM DESIGN . . . . . . . . . 51
8 . 2 MATERIALS STANDARDS . . . . . . . . . . . . . . . 52
8 . 3 INSTALLATION PREPARATION . . . . . . . . 55
8 . 4 INSTALLATION PROCEDURES . . . . . . . . . 55
8 . 5 TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8 . 6 COMPLETION SERVICES . . . . . . . . . . . . . . . 60
8 . 7 GUARANTEE / WARRANTY
AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . 61
SECTION 9
Fine Grading And Soil
Preparation Standards . . . . . . . . . . . . 63
9 . 1 GENERAL STANDARDS . . . . . . . . . . . . . . . . . 63
9 . 2 SUBMITTALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9 . 3 MATERIALS STANDARDS . . . . . . . . . . . . . . . 63
9 . 4 ROUGH GRADING OPERATIONS . . . . . . 64
9 . 5 FINISH GRADING OPERATIONS . . . . . . . 64
SECTION 10
Grass Seeding Standards . . . . . . . . . 67
10 . 1 GRASS SEEDING . . . . . . . . . . . . . . . . . . . . . . . 67
EXHIBIT A
List of Recommended Plants . . . . 71
Page I iv CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 1 Exact details must then be adapted to fit
and function with the unique context and
Purpose and Intent constraints which exist in every project .
The context and constraints include
Based on the City of Fort Collins ' vision existing conditions that are expected to
to create a vibrant , world class remain for the long term , and future
community , these standards set forth a change planned or envisioned by the
coordinated approach to the design and City .
management of streets as visually
appealing public spaces that contribute
to Fort Collins ' distinct identity .
The term " streetscape " generally
encompasses the visual and pedestrian
environment of a street . These
streetscape standards involve parameters
for tree - lined streets and sidewalks ,
other landscaping along street edges ,
and landscaped medians in arterial
streets .
In addition to plantings , streetscapes
may also encompass various urban design
elements in certain settings . Examples
include special curb treatments and
median edges , low planter walls and
landscape walls , railings , bollards ,
planter pots , stone features , public art ,
pylons , specialty lighting , signal and light
pole treatments , specialty paving , transit
stops and furnishings , and the like .
Every streetscape project involves its
own context and constraints . Still , there
is a need for standards to set the bar for
level of quality and investment . These
standards provide a framework for
programming , budgeting , designing ,
maintaining , and renovating various
incremental projects as part of a whole
approach .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1
Page 12 CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 2
Applicability &
Use
These standards apply to all projects
involving streetscapes in the City right -
of - way including :
■ Private development projects .
■ City capital projects .
■ Any other miscellaneous
maintenance and renovation
projects and efforts .
Private development and public capital
projects may involve construction of
new streets , and / or changes to existing
streets .
The standards are intended to be used
by :
■ Staff , in the design and
management of City streetscapes
over time .
■ Landscape architects and designers .
■ Developers and decision makers in
the development review process .
■ Property owners , where plans and
activities involve streetscapes .
■ Citizens , City Councils , and staff , in
discussions involving streetscape
issues .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Pa g e 3
Page 14 CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 3 3 . 1 . 1 Streetscape Project Description
Project Plan required .
All streetscape projects involving
Submittal and landscaping and urban design elements
shall include a Streetscape Project
Review Description developed by City staff in
collaboration with any project
Streetscape projects that are part of
consultants , upon completion of design .
The description shall :
development applications follow a
standard City development review Be concise and avoid technical
process , which will include jargon ,
collaboration with staff on streetscape
design . Include relevant commentary in
addition to objective facts and
City capital projects involving information .
streetscapes are reviewed
administratively by interested City Describe the design intent ,
departments in an internal process of assumptions , and maintenance and
collaboration and routing of plans , renovations that will be needed
over time to realize the design
intent .
STREETSCAPE PROJECT Note all aspects of the project from
DESCRIPTION REQUIRED initial grading and soil preparation ,
to irrigation systems , to planting
For streetscapes to be successful , it is and establishment procedures , to
important for City staff in multiple management and maintenance .
departments to have a clear
understanding of the design intent , Note outstanding issues that need to
assumptions , and the needs for be monitored over time .
maintenance , monitoring , and
replacements of plants or other Examples of topics to be addressed
components . include .
A project description is needed to Reasons and concepts for all project
supplement technical project plans . decisions including planting ,
The purpose is to prompt designers and irrigation , mulches , boulders ,
staff to record the whole story of the hardscape , and urban design
streetscsape project . elements .
■ Plant species needing pruning or
trimming , specific weeding control
practices , annual clean - up , dividing
or periodic replacing to achieve the
intent .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 15
■ Plant species with a limited track
record in streetscapes that warrant
monitoring .
■ Mulches that need replenishing or
clean - up .
■ Urban design features that may
need touch ups , replacements ,
stocking of parts , or other
maintenance and renovations .
■ Any other information useful for
future understanding and
management of the streetscape .
3 . 1 . 2 Project Statement File .
Staff shall maintain Project Statements
for streetscapes on file .
Pa g e 16 CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 4 �
All Streets
The following standards apply to all
street classifications city - wide , except
where specific areas have applicable
planning documents that set forth
alternative standards tailored to the Street trees in an arterial parkway.
area .
4 . 1 . 1 Tree planting in parkways .
Wherever the sidewalk is separated
STREET TREES from the curb in accordance with the
Lorimer County Urban Area Street
Rows of street trees along street edges Standards , rows of canopy shade trees
are the fundamental , unifying element shall be planted in the parkway at 30 to
of continuity in city streetscapes . 40 foot intervals , centered between
the curb and the sidewalk .
Street trees can be considered as
multi - functional public infrastructure r
that :
14 ^
■ Defines the street as distinct space ,
providing a unifying framework for ;.
abutting developments .
■ Provides canopyshading along
g g
streets and sidewalks to reduce
glare and summer heat build - up . - - ► i
■ Provides a buffer between = -
pedestrians on the sidewalk and
vehicles in the roadway .
■ Provides space for streetlights and
signs , and for snow storage in
winter . 4
Street trees in a local street parkway.
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 7
4 . 1 . 2 Species groupings within tree
i
rows .
To the extent reasonably feasible ,
street tree rows in landscape areas ,
whether inside or outside of the
sidewalk , shall be in groupings of three ,
five , or more of a single species . The
intent is to provide a degree of species
diversity within a deliberate , repeating
design pattern .
Designers are encouraged to arrange
changes in species to reflect roadway
conditions , such as open stretches of
roadway between access points ,
stretches approaching intersections and
driveways , and / or changes in adjoining
land use .
( 41
Plan view illustration
of street trees
showing groupings.
,y
Page 18 CITY OF FORT COLLINS STREETSCAPE STANDARDS
4 . 1 . 3 Street trees in sidewalk `
�► 'frr+ � h ;
Cutouts .
If a project involves a new sidewalk
that must be attached to the curb due
to unique constraints or context , then J �
the sidewalk width shall be wide
enough to incorporate planting cutouts
with tree grates to the maximum
extent feasible .
■ To the maximum extent feasible , 8-foot sidewalk with 4'x4 ' tree grates, where there is
such sidewalks shall be 12 - 15 feet an abutting landscape area.
wide with cutouts at least 25 square
feet at 30 - to 50 - foot spacing . The soil surface in a sidewalk cutout
Larger cutouts with more than 25 shall be level with the bottom of
square feet are encouraged . the sidewalk slab . Trees shall then
be planted with the top of the root
■ In all cases , trees in sidewalk ball 1 - 2 inches above the soil
cutouts shall be located at least 8 surface .
feet away from buildings and offset
from building entrances . All tree grates shall be installed per
manufacturer ' s instructions .
■ If such an attached sidewalk has an Frames shall be set in a true , flat
abutting landscape area , then 8 feet plane to prevent rocking of the
shall be the minimum width in grate . The grate or a template shall
which canopy trees shall be be set in the frame before concrete
provided in sidewalk cutouts . is poured to ensure the final
installation is square and flat .
■ The minimum area of any sidewalk
cutouts shall be 16 square feet , Grates shall be of a pedestrian - safe
using 4x4 - foot tree grates . Larger ADA - compliant style with slot
cutouts with more than 16 square openings 3 / 8 - inch or less .
feet of area are encouraged , for
example 4x6 - foot or 49 - foot tree A spacing interval up to 50 feet shall
grates , to support tree health . be permitted for street trees in
grates where abutting commercial
buildings face the street with no
intervening vehicle use area
between the street and the
building .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Pa g e 9
4 . 1 . 4 Tree planting outside of 4 . 1 . 5 Adjustment of spacing
sidewalks where existing constraints intervals .
preclude parkway tree planting or The Director or the City Forester may
sidewalk cutouts . approve or require larger or smaller
Where a sidewalk is attached to the spacing intervals to better fit the
curb and is less than 8 feet in width , growth habits of different street tree
canopy shade trees shall , to the extent species , for safe use of the street or
reasonably feasible , be established in sidewalk , and to better fit with existing
an area ranging from 3 to 7 feet behind trees or other existing conditions
the sidewalk at 30 to 40 foot intervals . unique to the location .
This standard shall also apply where
unusual constraints preclude tree 4 . 1 . 6 Overhead power line conflicts .
planting in a parkway . Ornamental trees may be planted in
substitution of the canopy shade trees
Any such planting will typically require where overhead lines and fixtures
coordination with abutting property prevent normal growth and maturity .
owners .
4
-
- r
Examples of street trees outside of sidewalks.
Page 110 CITY OF FORT COLLINS STREETSCAPE STANDARDS
4 . 1 . 7 Spacing from driveways .
No tree shall be planted closer than 8
feet from any driveway or alley .
4 . 1 . 8 Tree separation from utilities . 5 i
Landscape and utility plans shall be
coordinated . Following are the . 8 ' min.
minimum dimension requirements for - Je
the most common tree / utility D r i v e w a y
separations .
■ 40 feet between canopy shade trees
and streetlights . Fifteen ( 15 ) feet I 40 ' min.
between ornamental trees and
streetlights .
■ 10 feet between trees and water or Canopy Shade
sewer lines . Trees
■ 4 feet between trees and gas lines .
■ 4 feet between trees and
underground electric lines shall be r
provided to the extent reasonably
feasible .
_ F
Exceptions to these requirements may -
occur where utilities are not located in
their standard designated locations , as ,
approved by the City Forester or the
Director . Tree / utility separations shall
not be used as a means of avoiding the
planting of required street trees . 40
I
j 15 ' min.
' Ornamental
Trees
1 _
Tree separations from streetlights and
driveways.
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 11
Non - gardeners and typical commercial
crews can readily maintain cool - season
PARKWAY LANDSCAPING - TURF = turfgrass . It naturally inhibits weeds ,
TYPE GRASS and mowing is an efficient way to
control weeds that do occur . It works
Turf- type grass in parkways provides a well in conjunction with street trees
multi - functional solution for with tolerance for shading . In winter ,
landscaped edges along city streets of dormant turf is easy to keep tidy and
all classifications . Two main types of trash - free . It tolerates foot traffic
turf- type grasses may be used in Fort better than any other living ground
Collins streetscapes : cool - season cover .
turfgrasses , and warm - season native
shortgrasses . Cool - season turfgrasses
include improved varieties of Kentucky I� ;
Bluegrass , Tall Fescue , Perennial `
Ryegrass , and Wheatgrasses . Warm -
season native shortgrasses include
improved varieties of Buffalograss and 7
4
Blue Grama .
IN
Efficiently irrigated , mowed cool -
season turfgrass provides a living green
edge to city streets over a long growing _
season . The green edge , along with
street trees , is a unifying element that
helps define City streets as continuous Turfgrass parkways provide continuity and multiple
spaces , in conjunction with street functions.
trees .
Blue Grama and Buffalograss have very
Cool - season turfgrass can be a low irrigation and mowing needs . They
sustainable , functional landscape are active and green for a shorter
solution consistent with "xeriscape " season than cool - season turfgrasses ,
and "water- wise " landscaping but have an attractive straw color
principles . These principles recognize when dormant . They can offer a
cool - season turfgrass as an appropriate beautiful alternative to cool - season
use of water in high visibility , multi - turfgrasses with their fine textures and
functional , high - use areas , and soft gray- green color . They require full
parkways typically fit that description . sun and significant weed control to
Cool - season turfgrass can be reasonably maintain a high quality appearance in
drought tolerant , depending on the city landscapes . They do not tolerate
species and improved variety . shady spots , high levels of foot traffic ,
Problems resulting from periods of or overwatering . They are not as
neglect are relatively easy to correct , competitive with weeds , and weeds
and the turf rarely, if ever , needs stand out in contrast to the texture and
replacement . color of the grasses .
Page 1 12 CITY OF FORT COLLINS STREETSCAPE STANDARDS
4 . 2 . 1 Requirements .
Section 5 includes parkway landscaping
standards for Arterial Streets . Section y
6 includes parkway landscaping
standards for Collector and Local
Streets . 4 ,}
PARKWAY LANDSCAPING
ALTERNATIVES TO TURF -TYPE
GRASS
Mulched planting beds can be an Mulched planting bed in the parkway limits
acceptable alternative solution to water use and can provide visual interest .
turfgrass for parkway landscaping in 4 . 3 . 1 Where Appropriate .
some situations .
Alternatives to irrigated turfgrass can
This alternative typically requires less be an appropriate choice for property
water than cool - season turfgrass . With owners abutting collector and local
appropriate plant selection and proper streets , depending on whether the
maintenance it can offer seasonal parkway is governed by an approved
interest and add character . While Development Plan . Alternatives can
maintenance needs can be less also be appropriate for arterial street
frequent than a cool - season turfgrass projects in special plan areas that have
mowing regime , they can be more recommended alternatives .
complex and occasionally more time -
consuming as weeding , trimming , 4 . 3 . 2 Requirements .
mulching and replacing materials are Section 5 includes parkway landscaping
important to keep the plantings healthy requirements for Arterial Streets ,
and attractive . Section 6 includes parkway landscaping
requirements for Collector and Local
Streets ,
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 113
t 4
SIGHT DISTANCE TRIANGLES AT
INTERSECTIONS I I
Sight distance generally refers to the I
line of sight from a driver at an I •
unsignalized intersection to f
approaching vehicles that the driver I
needs to see in order to safely enter I . ,
traffic . I
4 . 4 . 1 Requirements . Distance 1
A visual sight distance triangle , free of I
any structures or landscape elements
shall be maintained at street
intersections and driveways , as i
required in Figure 7- 16 in the Larimer N •
County Urban Area Street Standards . ( _
O
Deciduous trees may be permitted to I
encroach into the clearance triangle I i W
provided that the lowest leaves shall be W
at least six ( 6 ) feet from grade and are --
spaced so that they do not obstruct line N
of sight . I
M
I
Site Distance Triangle concept.
Page 1 14 CITY OF FORT COLLINS STREETSCAPE STANDARDS
4 . 54e5el LID encouraged .
LOW IMPACT DEVELOPMENT LID techniques and technologies are
STORMWATER MANAGEMENT encouraged whenever the drainage
patterns and the infrastructure allows
for • be used .
In a " Low Impact Development " ( LID )
approach to streetscapes , landscaped 4 . 5 . 2 Low Impact Development
parkways and medians are depressed a
rather than raised , to help manage streetscape projects .
stormwater runoff closer to the source . In any streetscape where a Low Impact
Depressed landscape areas are Development approach is used ,
designed with special soil mixes , Streetscape Standards shall be adapted
corresponding plantings , and other or modified as needed per the
design techniquesto infiltrate and •
runoff , rmwater Criteria Manual .
filter - . • of • •
• conveying all runoffto centralized
detention and treatment facilities .
The City ' s Stormwater Criteria Manual ,
which governs the management of
stormwater in the city , describes
de - - • and
maintenance techniques applicable to
streetscapes .
� .d. . . . � ' �. � _—_' _ x yr: r► ��fij. ":1
Illustration of LID concepts in a parkway.
CITY
'®�q�M . "�.'� � ^. . . �T.i'•= r •",.• - - den.c 1 • ' .. _ ��1. Vie` �1fp I5 `11r'i G r �N..�. -I i�'Ha
_ z
v �
OF •
Swale Zone
-Varying sizes of river cobble, no plants
Tree Zones -Main flow area
-Flat area created using larger -Set on sand bed with perforated pipe below
cobble to break grade Vegetated Zone
-Plant medium
-City standard rain garden soil mix
-Gravel mulch
-Drip Irrigation
Decorative grate over ' Edges
sidewalk chase - ''� ,* . -Compacted base for curb stability
-Larger cobble
Forebay Zone
Water -Cemented cobble slows
water flow and catches debris
-Can be power washed to clean
Illustration of LID concepts in a parkway. -Drops below incoming flow line
Page 1 16 CITY OF FORT COLLINS STREETSCAPE STANDARDS
I -
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fey
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Illustration / I median conContwithstreetrunoff directed / I depressed median I flush band
instead / / and gutter.
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Illustration / Imedianconceptwith street runoffdirected / I depressed median / • /
Page 1 18 CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 5
Arterial Streets
The city ' s arterial streets are complex
and expensive public infrastructure ,
combining virtually all utility and
transportation systems of the city .
Besides the functional needs for traffic
and utilities , a pervasive theme
throughout the City ' s Comprehensive Poudre River valley.
Plan is the importance of streets as
public space . As high - visibility public Some arterials are distinguished by the
space , arterials create first inclusion of medians along street
impressions , are experienced by all corridors and in roundabouts . Besides
residents on a daily basis , and play a managing traffic , medians provide very
large role in determining the character high - visibility space for landscaping ,
and conveying the civic intention of the and provide a refuge for pedestrians
City of Fort Collins . crossing the road . Medians can
humanize the scale of a wide street ,
Arterial streetscapes vary widely , from and add beauty and civic identity .
the Downtown core , to suburban They are a highly visible mainstay of
residential areas , to the Natural Areas urban design , and thus are a major
in the Poudre River valley . aspect of the City ' s streetscape efforts .
11
rt OP4
Downtown core. Medians in a roundabout .
Suburban residential area.
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 19
ARTERIAL STREETSCAPES MAP
The Arterial Streetscapes Map
recognizes differences between various
arterials throughout the city . It
indicates where a " Standard Arterial
Streetscape " approach should apply ,
and where other corridor segments and
gateway intersections warrant their
own tailored approach to streetscape
design and management .
The map works in conjunction with
design standards in the following
chapters to guide investment in
streetscapes throughout the city .
The types of Arterial Streetscapes
and Gateways are .
■ Standard Arterial Streetscapes .
■ Enhanced Travel Corridors .
■ Special Planning Areas .
■ Streetscapes constrained by
Existing Development .
■ Gateway Intersections .
■ Community Entrance Gateways
( at Interstate 25 ) .
Page 1 20 CITY OF FORT COLLINS STREETSCAPE STANDARDS
Streetscape Design Standards and Guidelines
Arterial Streetscapes
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CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 21
Planting compositions must include :
ARTERIAL STREETSCAPE DESIGN : • Varied plant forms , textures , and
STANDARD ARTERIAL foliage in addition to flowers .
STRFFTSCAPFS - MEDIANS
■ Coordinated , repeating groupings of
The primary focus of " Standard Arterial plants to form an overall pattern .
Streetscapes " is on medians , including
the medians in roundabouts . ■ Accent groupings to add detail and
variation within the overall pattern .
Median standards emphasize mixed
plantings of perennials , grasses , shrubs , • Related elements such as mulches
and tree groupings , with a mulched and boulders .
ground surface . The intent of these
standards is to reflect Fort Collins '
western regional character with
regionally - specific plants suited to the
harsh roadway environment .
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Illustration of standard arterial median landscaping approach.
P a g P 1 22 CITY OF FORT COLLINS STREETSCAPE STANDARDS
5 . 2 . 1 Median width measurements . Medians less than three feet
All references to median widths are wide shall be paved rather than
from face of curb to face of curb . planted .
5 . 2 . 2 Median grading .
The ground surface in landscaped
medians shall be crowned with a high
point in the center , with slopes not to
exceed 7 : 1 or approximately 14
percent . This standard shall not apply
where a median has a cross slope due
to opposing traffic lanes and curbs
having different elevations , such that a
crown may not be feasible .
5 . 2 . 3 Median grading in
roundabouts .
The ground surface in center medians
in roundabouts shall be crowned with
slopes not to exceed 7 : 1 or
approximately 14 percent . The intent
of this standard is to increase the visual
prominence of landscaping , and work in
conjunction with planting and
hardscape elements to achieve year -
round screening of visibility across the
roundabout to a height of at least 4
feet .
5 . 2 . 4 Median planting general
approach .
Tree groupings and mixed plantings of
other plant types shall be established
and maintained in medians .
This standard shall not apply in the
following situations :
• Trees shall not be planted in
medians less than seven feet
wide .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 23
5 . 2 . 5 Median tree groupings : 5 . 2 . 7 Evergreen tree Y
setbacks from face of
■ Canopy shade trees , ornamental curbs . ;
trees , and evergreen trees shall be Evergreen trees shall be set
planted in groups of three , five , or back from the face of curbs :
more to the extent reasonably
feasible . Open intervals shall be Large evergreen trees - 9 fJ'
provided between the groups . feet .
JJ
■ Open intervals between tree groups Small evergreen trees - 7
shall constitute 30 - 60% of the length feet . '
of a given median . These
percentages are intended to convey 5 . 2 . 8 Staggered median 4
a general proportion rather than a tree groupings if space
precisely measured formula . permits .
■ Determination of the open intervals Tree groupings shall be
shall be based on the design intent staggered rather than aligned
and growth assumptions for trees in straight rows , where
over a given time frame . median width permits a
stagger of at least 2 feet .
■ Where median length allows ,
repetition of tree groupings is t,
encouraged .
5 . 2 . 6 Tree separation from median
edges . ;
Separation of trees from concrete
edges shall be provided by designers as
needed based on assumptions for
growth and pruning over a given time
frame . The following minimum
separations shall be provided for tree
types as listed in Exhibit List of
Recommended Plants :
Large canopy trees - 2 . 5 feet . '
Ornamental trees - 1 . 5 feet .
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Large evergreen trees - 7 feet . Example plan view of a median
Small evergreen trees - 5 feet . showing tree groupings.
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Page 1 24 CITY OF FORT COLLINS STREETSCAPE STANDARDS
5 . 2 . 9 Mixed plantings .
Mixed plantings of perennials , Mixed plantings shall be arranged in
ornamental grasses , shrubs , and an informal pattern rather than
shrubby trees shall be planted and formal rows or geometrically - shaped
maintained to cover at least 75 % of the groupings . The informal pattern
median area within 5 years , based on shall include coordinated , repeating
assumptions for growth and groupings of plants in an overall
maintenance of plants by the designer . composition , rather than random
placement . Plantings shall be
designed and maintained to span
■ Mixed plantings shall be composed the full width of the median at
of groups of at least 3 plants per maturity .
group , with each group composed of
a single species . Mixed planting standards apply to
all medians 3 feet wide or wider .
■ Mixed plantings shall be composed
for understory conditions at tree
groupings , and open conditions in
intervals between tree groupings .
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Mixed planting in a newly planted median.
CITY OF FORT COLLINS STREETSCAPE STANDARDS a 25
v
` This - informal Not This - formal,
pattern, but with I geometric pattern of
i repeated groupings to massed plantings. While
create an overall this kind of design
order in the design a pattern is not the
pattern. •° "Standard Arterial
Streetscape " approach, it
may be appropriate for
special planning areas.
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P a g e 26 CITY OF FORT COLLINS STREETSCAPE STANDARDS
5 . 2 . 10 Mixed plantings — two options 5 . 2 . 11 Perennial Garden Style
for intensity . requirements .
Two options for mixed plantings shall An average of at least 4 groupings of
be permitted : perennial or ornamental grasses , and 3
groupings of shrubs per 250 square feet
■ Perennial Garden Style . shall be planted and maintained .
Groupings shall be composed of single
■ Shrub Garden Style . species with at least 3 plants .
Perennial Garden Style : This option
emphasizes the maximum degree of
planting intensity , color , and variety ,
with perennials used for the full length
of a median . This results in a higher
number of different plant groupings
and a higher total number of plants to
achieve the required 75 % plant
coverage .
Shrub Garden Style : This option allows
the use of larger shrubs and shrubby
trees to achieve the required 75 %
coverage with a lower number of
different plant groupings and lower
total number of plants .
II
Illustration of Perennial Variety Style mixed planting, with open areas and tree groupings.
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 27
5 . 2 . 12 Shrub Garden Style 7_ K r����s Plan view
requirements . L s illustrations
• I
An average of at least 3 groupings of ! . �5 com grin
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shrubs per 250 square feet shall be h . s perennial variety
planted and maintained . Groupings concept
shall be composed of single species (on the left)
with at least 3 plants . - r and shrub
�3 - variety concept
In open areas at the ends of medians at (on the right) .
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intersections , at least 4 perennial or ottt-
ornamental grass groupings and 3 shrub ,
groupings shall be planted and , 4
maintained , with emphasis on color
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and / or texture over a long growing
season .
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Example of a mixed shrub planting with regionally `
adapted species (not a streetscape).
4 �
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5 . 2 . 13 Decision on options .
The option to be used in any project
shall be approved by the Director based
on consideration of the relative
importance of a given median to
community image , intensity of adjacent
land uses , the width and length of the
median , and City budget
considerations . In general , the
Perennial Garden Style is more
appropriate in higher - activity , mixed -
use areas . The Shrub Garden Style is
generally more appropriate in
residential and other lower - activity
areas .
Page 128 CITY OF FORT COLLINS STREETSCAPE STANDARDS
5 . 2 . 14 Median noses and narrow
ribbons - planting .
Median areas 3 - 7 feet wide shall be -
planted with low mixed planting under
30 inches in height . n
5 . 2 . 15 Plants and mulches in �` � ,
conjunction .
Plant groupings shall be designed in ; 4 ,
association with either cobble mulch or ,,;,�
organic mulch . Plants selected to This - mulch pattern spans the median in a sweeping
feature green leaves and flowers are curve.
generally complemented by organic
mulch , while stone mulch can detract --
from their effects . Stone mulch can
complement evergreens , other plants
selected to feature distinct forms or
textures , and xeric plants with grey -
green foliage .
When mulches are mixed , the patterns
shall be in sweeping curves , and not . `-
rectangular blocks or strips along the
edge . Not this — mulch pattern in linear strips.
5 . 2 . 16 Mulches .
Organic mulch shall be used , either
solely or in combination with stone This — mulch pattern in sweeping curves designed
mulch to add visual interest with a with the direction of travel in mind.
design pattern . Organic mulch shall be
undyed shredded woody material . If a
combination is used , the pattern shall
be designed in conjunction with plant Not this - mulch pattern in linear strips.
groupings , and the pattern shall span
the full width of the median rather
than dividing the median lengthwise
into linear strips or lining the edge of
the median . Not this — mulch pattern in blocks.
Stone mulch , if used , shall consist of 2 -
4 - inch stone combined with groupings
of 4- 12 inch or larger stone hand placed
as accents for visual interest and to
separate abutting organic and stone
mulches . Larger stone shall be placed
CITY OF FORT COLLINS STREETSCAPE STANDARDS P a g e 29
first , to be embedded , mingled , and Boulder selection shall be based on
settled with the smaller stone rather continuing an established theme , or
than loosely dumped . establishing a theme where none
exists .
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Stone mulch placement example.
5 . 2 . 17 Boulders . Tan Masonville sandstone quarry blocks.
Boulders may be used to structure and
complement plant groupings . They
shall be designed and placed in r, " 1r ,
deliberate groupings in association with
the planting and mulch design pattern ,
and any low walls or slopes . They shall
be placed prior to planting and
mulching , and slightly sunk into the '
ground , to be embedded and mingled
with mulches and plantings . Permitted
boulders shall be tan Masonville
sandstone quarry blocks , rounded river
boulders , or weathered moss rock
boulders .
Rounded river boulders as part of a whole design
approach to plantings and mulches.
Page 30 CITY OF FORT COLLINS STREETSCAPE STANDARDS
5 . 2 . 18 Median hardscape — edges
and paving .
Hardscape treatments depend on
different median widths and different
contexts throughout the city , and shall
comply with the following 4"
requirements :
A . In median areas that are at least 7 f . .
feet wide , a double curb edge shall
be installed where a project
includes 1 ) a new median , or 2 ) an
existing median that lacks splash
blocks or has splash blocks that
warrant replacement . The purpose
of this standard is to provide Illustration of double curb.
additional depth for planting areas , The following exceptions to the double
space for maintenance personnel , curb shall apply :
an additional correction barrier for
vehicles leaving the roadway, and a
visual design that complements the 1 ) Sloped concrete splash blocks with
curb and gutter . Where a median integral tan tint and exposed
tapers to less than 7 feet , the aggregate finish shall be permitted
upper curb shall return across the in lieu of a double curb if a median
median to enclose the upper project is located in a street
landscape area . segment or area of the city where
existing splash blocks have a
previously established theme and
6"
are expected to remain for a long
„ �� term .
6"
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Tan-tinted —
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Standard curb '"
and gutter
Double curb design.
Sloped splash block design.
CITY OF FORT COLLINS STREETSCAPE STANDARDS P a e 31
The following exception to pavers shall
apply : where existing tan exposed -
d aggregate concrete median paving
establishes a prevailing theme , it shall
be permitted for paving of medians
` under 3 feet wide .
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1.
Sloped splash block design: existing Standard
Arterial Streetscape corridors throughout the city
include extensive segments with existing sloped
concrete splash blocks, per a former standard. �
Tan exposed-aggregate concrete median paving.
2 ) Where a median is less than 7
feet wide , the edge shall be a
standard 6 - inch curb with no
double curb or splash block .
B . Median areas under 3 feet wide
shall be paved rather than planted .
Paving shall be rectangular
concrete or brick pavers set on a
concrete base .
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Rectangular pavers set in a herringbone pattern.
Page 1 32 CITY OF FORT COLLINS STREETSCAPE STANDARDS
Median • - • feetor wider
mixed planting • / ornamental trees / _ 1
• '
provide a sense of pedestrian scale. Double
cur
/ continues / crosswalk.
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Narrow median area 3- 7 feet
wide — mixed planting, no trees,
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roundaboutillustrations of I . I / approachmixed planting, boulders, I hardscape patterns all designed
in conjunction. Lower graphic Iinclusion • landscape
ARTERIAL STREETSCAPE DESIGN : ARTERIAL STREETSCAPE DESIGN :
STANDARD ARTERIAL ENHANCED TRAVEL CORRIDORS
STREETSCAPES - PARKWAYS ( ETC 2S )
The City maintains most arterial street Standard Arterial Streetscape standards
parkways , with exceptions in a limited may or may not be adequate and
number of situations where other appropriate for design and
arrangements are made with another maintenance of these corridors ,
entity . Turfgrass provides a range of depending on unique circumstances in
benefits as a solution to arterial street each ETC .
parkways as described in Section 4 .
The benefits describe are relevant for These arterial corridors are intended to
all street classifications , but are evolve as a framework that
particularly relevant for arterials which incorporates and supports high
form a continuous city - wide framework frequency transit with special emphasis
of public space . on walkability and bicycling .
5 . 3 . 1 Irrigated Turfgrass . 5 . 4 . 1 Tailored streetscape approach .
Parkways in Standard Arterial For streetscape projects where
Streetscapes shall consist of irrigated previous ETC plans do not define a
turfgrass and street tree plantings as streetscape approach , the Standard
described in Chapter 4 . Appropriate Arterial Streetscape standards in
irrigation shall be provided to maintain Section 5 . 2 shall be considered as the
health of plantings with efficient use of minimum requirement for the level of
water , quality and investment .
Design and maintenance shall then be
adapted to unique circumstances in
each corridor as appropriate , based on
study of and response to :
; 1 . Guiding policies for ETC ' s .
_ 2 . Established precedents in the
corridor that are consistent with the
vision and policies for EMS .
Examples of permissible design
Arterial street parkway. variations include :
3 . Planting patterns to reinforce the
pattern of transit facilities .
Page 36 CITY OF FORT COLLINS STREETSCAPE STANDARDS
4 . Hardscape elements - edge Design and maintenance shall then be
treatments , paving , planters , and adapted by project designers and staff
the like , particularly where related based on study of and response to the
to transit stops and shelters . context and any established precedents
that are consistent with the vision and
5 . Urban design amenities in a policies for the area , and are thus
coordinated program , particularly expected to remain .
including paving , furnishings , and
structures at transit stops and Examples of permissible design
shelters . variations on the Standard Arterial
Streetscape include :
In all cases , design shall include
repeating elements to create a theme 6 . Distinct patterns of trees and other
for the corridor and avoid clutter of plant groupings .
unrelated elements .
7 . Signature plant species .
8 . Hardscape elements - edge
ARTERIAL STREETSCAPE DESIGN : treatments , paving , low planter
walls or landscape walls , and the
OTHER SPECIAL PLANNING like .
AREAS
9 . Urban design amenities such as
Special planning areas have subarea paving , street furnishings , and
plans , corridor plans , or other planning transit stop shelters or other
documents that recognize their unique themed structures in a coordinated
context and character . The level of program .
specific direction for streetscapes
varies among the plans . In all cases , design shall include
repeating elements to create a theme
These areas warrant their own for the area and avoid clutter .
distinctive streetscapes with tailored
design and maintenance `'
characteristics , rather than the `
Standard Arterial Streetcape . 'T .
5 . 5 . 1 Tailored streetscape approach .
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For streetscape projects where plan - -
documents are not definitive , the
Standard Arterial Streetscape standards
in Section 5 . 2 shall be considered as
the minimum requirement for the level
of quality and investment , and may be
considered as a reference for design . Custom-tailored streetscape with parkway and
median details as part of a whole planning approach
to a street segment in Campus West.
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 137
ARTERIAL STREETSCAPE DESIGN : ARTERIAL STREETSCAPE DESIGN :
CONSTRAINED CORRIDORS AND GATEWAY INTERSECTIONS
SEGMENTS
These intersections are exceptional
These are arterial corridors and locations where the Standard Arterial
segments where the Standard Arterial Streetscape should be augmented with
Streetscape is not feasible due to additional intensity of streetscape
physical constraints of existing development in any capital projects .
development . Typically , both parkways These locations warrant the highest
and medians are constrained . level of investment for design ,
construction and maintenance .
k - The intent is to highlight entryways
into the city , and also edges of districts
} within the city . The locations consist
of intersections , whether signalized or
-^ roundabouts , extending outward as
appropriate to include medians
associated with the intersection .
Example of a constrained arterial (East Prospect) . 5 . 7 . 2 Components .
5 . 6 . 1 Tailored streetscape approach . Streetscape projects at gateway
Streetscape projects in these areas intersections shall be enhanced with a
shall incorporate aspects of a Standard coordinated program of components
Arterial Streetscape to the extent including at least four of the following :
reasonably feasible . The allocation of • Plantings of annual flowers in
available space and the compromises beds or large pots .
on each component of the street shall
be determined on a project - by - project • Railings or low walls .
basis .
• Bollards .
The most important aspects to consider . Pedestrian lighting / other
in the streetscape approach are safe specialty lighting .
sidewalks and street trees as described
in Chapter 4 . • Columns , pylons or other urban
design structures .
• Signal or light pole treatments .
• Color themes in repeated
components .
• Special paving .
Page 1 38 CITY OF FORT COLLINS STREETSCAPE STANDARDS
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Illustra Ions • eme1 1 an ings, . me1 .
planters, and specialty paving as exampes of
special treatments to mark an enhanced
gateway signalized intersection (above) and
gateway roundabout (below) .
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Page
40 CITY OF • • COLLINSA ' STANDARDS
ARTERIAL STREETSCAPE DESIGN :
COMMUNITY ENTRANCE
GATEWAYS ( 1 = 25 )
Interstate 25 interchanges act as major
community entrances , in conjunction
with the arterial streets leading into
Fort Collins from the interchanges .
Ak
Future improvements to the
interchanges are expected to include
gateway design features to reinforce
the community entrance role .
Example of enhanced gateway components at an 1-25
Design and management of any such Interchange, including stone walls and a themed planting design.
interchange improvements , and
and arterial streetscapes near the �` A
interchanges , may present opportunities ` k i
I t . (
for coordination . ,
For example , any interchange gateway
features may be appropriate to extend- < :
westward along a segment of the
arterial streetscape . If such features
are not appropriate to be extended ,
they may still influence , or be
influenced by , the character of the
arterial streetscape .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 41
Page 1 42 CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 6 In developments where there is no
development plan that specifies
Collector a n d
parkway landscaping , the owner of the
Local Streets property abutting the parkway may
select either approach , regardless of
any Homeowner Association covenants
that may apply to the development ,
and shall be responsible for the
PARKWAY LANDSCAPING installation and maintenance of the
parkway landscaping in accordance
Streetscapes on collector and local with Section 24 - 42 of the City Code .
streets typically consist of parkways
only . The primary intent for parkway 6 . 1 . 2 Approved development plans
landscaping is to provide a setting for govern .
street trees , and work in conjunction In developments with approved
with street trees for a number of landscape plans , the parkway
purposes : landscaping must be in accordance with
■ Define streets as the framework of the plan .
public space within which individual
properties fit . A Homeowners Association ( HOA ) , or a
property owner with notice to and
Contribute to the attractiveness and opportunity for comment from
visual interest of the street edge . the HOA , may request a ParkwayLandscaping Amendment to an
Mark the transition from public to approved plan for parkway landscaping .
Such a request by a property owner
private space . shall be limited to the parkway strip
■ Blend public interests in street abutting the lot of the property owner
infrastructure with interests of and shall be reviewed by the Director in
abutting property owners who are accordance with Section 2 . 2 . 10 ( D ) of
required to maintain these parkways the Land Use Code .
by City Code . 6 . 1 . 3 New development landscape
6 . 1 . 1 Two approaches . plans .
Two main approaches to landscaping Where a developer desires to offer non -
parkways are permitted in collector and turf grass options to homeowners , the
local streets : turf - type grasses , and landscape plan shall contain notes and
mulched planting beds . Pros and cons drawings specifying options for non - turf
of each are discussed in Section 4 . ground cover plantings , with consistent
In both approaches , appropriate mulch and a recommended plant
irrigation shall be provided to maintain palette ,
health of plantings with efficient use of
water .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 143
6 . 1 . 4 Turf-type grass . '' ' Y_ ..► 5 >- '
Turf- type grass shall be permitted , I * ;%4� a
including both cool - season turf grasses
and warm - season native shortgrrasses as
discussed in Section 4 . The choice of
grass species and variety can make a t -._ :� � , i
major difference in water use needs , o �
ease of establishment , survival of the
grass , weeding , mowing , and renovation xAr
'
requirementsILA
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tip 9
M"`v . , 1 vt',. • of
.9*'0_ - Mulched planting bed with a perennial garden in a
parkway.
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Cool-season tungrass parkway congruent among
properties along the street, and also congruent with
adjoining landscaping.
6 . 1 . 5 Mulched planting beds . Combination of turf and planting beds in parkway areas.
Non - turf ground cover plantings shall be 6 . 1 . 6 Requirements for non -turf
permitted , including mulched planting ground cover plantings :
beds and ground cover plantings . With
an understanding of plant selection and
proper irrigation and maintenance , A . Landscaping shall be designed ,
these plantings can provide seasonal installed and maintained so that at
interest with little water required . least 50% of the area shall be
covered with live plant material
Property owners are encouraged to within 3 years from installation .
incorporate choices that provide a
degree of congruence with neighboring B . Plant materials shall be under 2 feet
properties in terms of mulches and tall if within 5 feet of a driveway
character of plantings . and under 3 feet tall in other areas .
Owners are encouraged to select
plants that maintain these height
limits with little or no pruning .
Page 1 44 CITY OF FORT COLLINS STREETSCAPE STANDARDS
C . Plant materials must not obscure edging , or similar material shall be
the line of sight for traffic or included .
obstruct the sidewalk . Plantings of
any height that obstruct the line of F . Exception : if edging is needed to
sight or cause safety concerns may keep turfgrass out of mulched
be required to be kept trimmed to a areas , perpendicular to the street ,
lower height or removed so visibility such edging shall be flush or within
is provided / maintained . 1 inch of the ground surface , so it is
not a visible element .
D . No fences or thorny / prickly plant
material are allowed . G . Plant materials and mulch must be
kept off the street and sidewalk .
E . In mulched planting beds , the soil
surface shall be 2 - 3 inches below H . Avoid cutting tree roots if
the curb and sidewalk to allow for converting an established turf
mulch to be contained . To avoid parkway to a planting bed . Within a
clutter , no additional timbers , tree ' s dripline , minimize grade
concrete products , plastic or metal change to protect the tree roots .
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i 1 . 1, ♦ � �z-.13 S Ja � [� � ?�� Ir`+ f ♦t�! + —'aim "�� 3 't,�' .y , _ _..
� "�yyy+ >>�Y. � „>�{ �a•'� l its. JI;tC'�+ *}Jn,�� r ♦CW.-;.(._.
ry_ i. j C��JeJiM1YF-r,`'0�,� _[' t /• � ri�YN. a-[ 'P'.` _ ♦
Not this - gravel that is not congruent with any other
This - organic mulch, healthy plants, and stepping portions of the streetscape, dead plants, weeds, concrete
stones if needed. products, and exposed fabric prevent this parkway from
contributing to the street as attractive public space.
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 45
Page 1 46 CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 7 the City ' s standards for planting and
maintenance for all trees in the public
Maintenance rights - of- way and apply whether the
work is performed for the City
Standards contractually , by the City , or by private
entities or individuals . Exceptions to the
The purpose of this Section is to foster a standards and practices require written
consistent , high quality appearance for approval of the City Forester .
all streetscapes , whether maintained by
the City , its agents , or by private 7 . 1 . 2 Permits for tree work .
developers , businesses , or individuals . A permit must be obtained from the
City Forester before any planting ,
Given the high visibility of city pruning , removal , or destruction of any
streetscapes , the public is able to tree or shrub within the public right - of-
observe maintenance practices in the way of any street or sidewalk .
field as well as the results of that Businesses performing this work must be
maintenance . The public perception of licensed by the City . No tree shall be
a well - maintained landscape is cut back in such a manner that its health
promoted by practices which benefit will be impaired or it creates an unsafe
the health of the landscape materials condition . An exception to this rule may
and achieve a neat , well - cared for occur to provide emergency relief of an
appearance . Quality maintenance is a immediate danger to persons or
function of workmanship , funding , property . Any such emergency
knowledge , and technique . These procedures must be reported promptly
standards attempt to ensure that all to the City Forester with plans for
streetscapes are cared for in a manner completion or follow- up work submitted
which reflects the high esteem that for approval . See the City of Fort Coffins
citizens have for these important public Tree Management Standards and Best
spaces . Generally , all landscaping shall Management Practices for details on
be maintained in a healthy condition acceptable pruning practices .
throughout the growing season . A neat
and attractive appearance is essential .
Irrigation systems , structures , and
sidewalks shall be maintained to MAINTENANCE RESPONSIBILITIES
represent the original integrity of the
design and installation . Maintenance responsibilities vary among
different street types , and also with
specific circumstances of abutting
TREE MAINTENANCE AND properties .
MANAGEMENT REQUIREMENTS 7 . 2 . 1 Maintenance responsibilities
standards and requirements .
7 . 1 . 1 Separate standards document .
A separate document , The City of Fort A . Street trees located on the City
Collins Tree Management Standards and right - of - way are the responsibility
Best Management Practices, contains of the City Forestry Division to
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 47
manage , maintain , and replace on maintained by the developer ,
all streets , regardless of who homeowners ' association , or other
maintains the surface . responsible party .
B . Exception : some streetscape 2 ) The developer installs the landscape
projects include a warranty period and after meeting obligations during
for establishment of newly planted the first two years , the City takes
trees in which the project is responsibility for both tree and
responsible . surface maintenance .
C . Medians in arterial streets shall be 3 ) The landscape is part of a Capital
maintained by the City . Improvements Project and a
contractor does the landscape work .
Exception : some streetscape The City is responsible for tree
projects include a warranty period maintenance and may or may not be
for establishment of median responsible for surface
landscaping in which the project maintenance .
is responsible .
4 ) Adopt A Median - - the City
D . Parkway landscaping on Collector encourages homeowners '
and Local streets shall be associations , business groups , and
maintained by the adjacent property other civic groups to take part in
owner in accordance with City Code . the Adopt - A - Median program .
Contact the City Parks Division at
E . Parkway landscaping on arterial 221 - 6660 for further information .
streets shall be the responsibility of
the City if there is no individual , LZ —
organization , or homeowners '
association that prefers to maintain ACCEPTANCE OF NEW ARTERIAL
them , or that can be fairly allocated STREETSCAPE PROJECTS FOR
the maintenance responsibility CITY MAINTENANCE
based on their unique benefit .
F . The following four other different 7 . 3 . 1 Streetscape installed to City
standards .
scenarios for planting and
Any new streetscape landscaping not
continuing maintenance are possible
depending on circumstances : designed and installed to these
standards may be rejected by the City
1 ) The developer installs the landscape Parks Division for inclusion in its
and the City takes responsibility for maintenance program . Developers and
tree maintenance after a warranty City capital projects shall notify the
period for full tree establishment City Parks Division and conduct a walk-
during which time specific through with Parks and Forestry Division
obligations are met . The surface staff at the end of the warranty period .
( turfgrass , other plantings , mulches , Any defects in the landscaping or
irrigation ) must continue to be irrigation system shall be corrected by
Page 1 48 CITY OF FORT COLLINS STREETSCAPE STANDARDS
the project that installed the perennials shall be removed
streetscape , immediately and replaced per the
design intent .
GENERAL MAINTENANCE 7 . 4 . 5 Annuals .
STANDARDS Planting of annuals in the spring shall be
in designated annual flower beds .
Annuals shall be regularly deadheaded
7 . 4 . 1 Trash . of spent blooms . Annuals shall be
Trash shall be removed on a regular removed in the fall after the first hard
basis . freeze .
7 . 4 . 2 Turf-type grass . 7 . 4 . 6 Mulch .
Cool - season turfgrasses shall be Mulch shall be replenished as needed to
maintained at a 3 - inch cut during the maintain complete coverage of the soil
growing season . Trimming shall be surface with a depth of 2 - 4 inches , with
concurrent with mowing , to match careful placement and reduced depth as
height of open turf , around mowing needed underneath plants to avoid
obstructions such as trees , curbs , and burying leaves or tender stems .
vacuum breakers . Turfgrass shall be
edged concurrent with mowing when 7 . 4 . 7 Weeds .
needed to prevent growth over edges . All landscaped areas shall be kept free
Visible clippings shall be removed from
sidewalks and streets . of weeds and invasive grasses that are
Buffalograss and Blue grama shall be not part of the design intent . Weeding
maintained at a maximum height of 12 may be done manually or by the use of
inches . herbicide and or pre - emergent . The use
of any restricted herbicides or soil
7 . 4 . 3 Shrubs . sterilants is prohibited . In accordance
with Best Management Practices , the
Shrubs shall be pruned as needed to : 1 ) effectiveness of the herbicide shall be
achieve the design intent ; 2 ) remove monitored .
dead or diseased branches ; and 3 )
support plant health and vigor . Dead
shrubs shall be removed and replaced
immediately . Shrubs shall not extend
over the curb or sidewalk .
7 . 4 . 4 Perennials .
Perennials shall be deadheaded and
trimmed throughout the growing season
as appropriate for the design intent for
each species . Depending upon design
intent , perennials and ornamental
grasses shall be cut back in late fall or
early spring prior to new growth . Dead
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 49
Page 1 50 CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 8 inspected , and approved by the
. � City Parks Division . Irrigation
Irrigation systems shall be installed and
Standards maintained so that irrigation
equipment will not spray onto any
streets , walkways , or features and
Proper watering systems help achieve structures that could be damaged
City goals and citizen expectations for by water .
public spaces . Irrigation of parkway
and median plant material is necessary C . The irrigation system must comply
to maintain a quality appearance and with the International Plumbing
long term health of streetscape Code and with the City of Fort
plantings . Collins Electrical Code .
It is the City ' s intent to be a good D . Any deviation in taps from the
steward of water resources consistent approved construction plans must
with "xeriscape " and " water - wise " be approved by City of Fort Collins
principles related to social , Utilities prior to installation . Any
environmental , and economic water service line shall be
sustainability . coordinated with City of Fort
Collins Utilities .
All irrigation systems will be designed
to meet the needs of each unique E . Any deviation in layout of the
landscape by following best irrigation system from the approved
management practices and up - to - date construction plans must be
technology . Without proper irrigation reviewed and approved by the City
design and maintenance , good Parks Division prior to or during
stewardship of the landscapes is not installation .
achievable .
F . The irrigation system shall be
designed to provide full coverage
and matched precipitation rates .
IRRIGATION SYSTEM DESIGN
G . Lateral piping shall be sized based
8 . 1 . 1 General design standards . on flow demands in gallons per
Irrigation design and installation shall minute ( gpm ) ; with velocities not
comply with the following general to exceed 5 . 5 feet per second .
standards :
H . Xeriscape principles shall be
A . Irrigation design shall be done by a utilized in the design of the
certified irrigation designer unless irrigation system .
otherwise approved by the Parks
Department .
B . Irrigation system design and
installation shall be monitored ,
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 51
I . All designs shall meet the industry ' s
Best Management Practices from 0 . The contractor shall install the
the Irrigation Association and ALCC saddle for the PVC or AC pipe .
(Associate Landscape Contractors
of Colorado ) . P . The backflow prevention device and
water meter shall meet the City of
J . Newly installed irrigation systems Fort Collins standards , and the flow
shall be subject to water audits . meter shall be Data Industrial .
K . The minimum distribution Q. A curb stop shall be installed
uniformity for spray heads shall be between the meter pit and the
. 55 ; for rotor heads it shall be . 65 ; backflow prevention device for
for stream rotors it shall be . 75 ; isolation purposes . The curb stop
and for impact heads it shall be shall be sleeved from the valve to
. 65 , grade and covered with a round
valve box .
L . Design considerations shall include :
1 ) shrub and perennial beds are to R . A blowout tube no larger than
be zoned separately from turf shall be placed between the meter
areas ; 2 ) sloped areas will have pit - curb stop and the back flow
separate zoning for heads at the prevention device . The injection
higher elevations from those at the port on the blow out tube shall be
lower elevation ; 3 ) areas with sweated on , attaching a female
different exposures are to be zoned adapter with a threaded brass plug .
separately ; and 4 ) In - head check
valves are to be used for all areas S . A blowout tee shall be installed
adjacent to walkways and at the immediately downstream of the
bottom of berms and pond areas . backflow prevention device .
M . Xeric irrigation and drip systems
come in a wide variety of
configurations . The correct MATERIALS STANDARDS
application shall be approved for
each landscape design by the City 8 . 2 . 1 Pipe :
Parks Department .
A . Copper shall be type K rigid
N . Trees planted in non - turf irrigated conforming to ASTM Standard 888.
landscape areas require short - term
and long - term irrigation and should B . Mainline shall be Class 200 PVC ,
be on individual or separate zones . NSF approved . If 3 inches or
Supplemental emitters shall be larger , use ringtite pipe .
installed on top and around the
root ball for short term health . C . Laterals shall be Class 200 PVC , NSF
Perimeter irrigation of the root ball approved .
shall be installed for long term and
permanent irrigation .
Page 1 52 CITY OF FORT COLLINS STREETSCAPE STANDARDS
D . No laterals shall be smaller than Brand and model shall be Rainbird
1 - inch pipe . PE Series Remote Control Valves ,
scrubber option with self cleaning
E . Trickle tubing shall be weather and screen unless City specifies other
UV resistant material . brand and model .
F . Polyethylene drip pipe shall be NSF B . Valves used for two - wire system
approved , SDR pressure - rated pipe , shall be properly grounded per
only as approved for drip manufacturers recommendation .
applications .
C . Drip valves , bubbler valves , and
G . Funny pipe shall be used only for micro - spray valves shall be
pop - up spray heads , and shall be accompanied by pressure - reducing
compatible with the elbows needed devices matched with
for the sprinkler heads . recommended filters to assure
proper operation and reduced
H . Lateral fittings shall be Schedule failure of such equipment .
40 , Type 1 , PVC solvent - weld , with
ASTM Standards D2466 and D 1784 . D . Isolation gate valves shall be
Kennedy 1571X or Matco # 100M ,
I . Copper or cast bronze fittings , able to withstand a continuous
soldered or threaded per operating pressure of 150 psi .
installation details shall be used for Clear waterway shall be equal to
all copper pipe . full diameter of pipe . Shall be
opened by turning square nut to
J . Mainline fittings shall be ductile the left (wheel opening is
iron for 3 - inch and larger pipe ; and unacceptable ) .
shall be PVC Schedule 80 for
smaller pipe . E . Manual drain valves shall be 3/ - inch
ball valve with tee handle , Watts
K . Sleeving shall be ductile iron or #B - 6000 , or approved equal .
PVC pipe under all paved surfaces .
Sizes shall be a minimum of two F . Quick coupler valves shall be 1 - inch
sizes larger than the pipe being brass , Rainbird #5RC units with
sleeved , but shall in no case be rubber cover . Supply 1 - inch brass
smaller than 2 - inch diameter pipe . key for Rainbird 55K .
8 . 2 . 2 Valves : G . Spears True Union ball valves shall
be installed upstream of the
A . Remote control zone valves shall be remote control zone valve .
electrically operated , appropriate Equivalent substitutes shall be
for the water supply , with manual accepted .
bleed device and flow control
stem . Valves shall have a slow- H . Valve boxes shall have matching
opening and slow - closing action for locking cover which shall be
protection against surge pressure . Carson , Pentex or approved equal .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 53
Box sizes shall be as specified to G . If two - wire systems are used ,
house one valve per box . approved shielded wire or
manufacturers recommended wire
8 . 2 . 3 Control System : shall be used .
A . Controllers shall have smart H . Approved wire connectors and
controller technology and shall be water - proofing sealant shall be
approved by the Parks Department . used to join control wires to zone
The number of stations shall valve wires . The wire connectors
include two extra stations for shall be what each specific
possible future use . The controller manufacturer recommends . Two -
box shall be weather tight and wire systems shall use
vandal resistant with locking manufacturers specified wire per
exterior disconnect . One Eicon warranty provisions .
pigtail or compatible remote
controller pigtail shall be used for 8 . 2 . 4 Sprinkler heads .
each 12 stations . All sprinkler heads shall be of the same
manufacturer as specified on the plans ,
B . The Control System Enclosure shall marked with the manufacturer's name
be Hof man Model A242408LP with and model in such a way that materials
A24P24 steel panel , Model A- FK1208 can be identified without removal from
floor stand kit and AL - 2BR lock kit , the system . The City will specify
or approved equal , brands and models to match other
equipment in use in public systems in
C . The surge protection shall be an 8 - the vicinity . Gear driven rotor heads
foot copper grounding rod , #4 solid shall be Hunter or approved equal .
copper wire , grounding buss Pop - up spray heads shall be Hunter,
receptacle , ground terminal strip Rainbird, or approved equal . All heads
and Irritrol SPD - 587 surge protector should have pressure regulating device
per manufacturer ' s specifications integrated in them to maintain proper
and details . operating pressure . They also shall
have anti water draining valves to avoid
D . The master valve shall be normally water waste when not in operation .
opened . ( Example : Rain Bird 1804 PRS / SAM
heads . A minimum of 4 " pop - up is
E . Control wiring shall be # 14 solid required . )
copper direct burial OF or PE cable ,
UL approved , or larger , per system
design and manufacturer's
recommendations .
F . Five - wire systems shall have a
consistent color scheme
throughout : Red = live ; White =
ground ; Black , Blue and Green =
extra .
Page 1 54 CITY OF FORT COLLINS STREETSCAPE STANDARDS
compaction , and pavement /
shoulder / surface treatment
INSTALLATION PREPARATION replacement as needed . Soldered
joints or fittings are permissible
8 . 3 . 1 Utility locates . above grade or inside a vault . No
Locate all utilities prior to trenching and solder , sealants , fluxes , pipe dope ,
protect from damage . Required calls and other materials shall contain
shall include , but are not limited to the any lead . All taps and installations
following : City Parks Division , 221 - are subject to approval and
6660 , for locates and 1 - 800 - 922 - 1987 inspection by the City of Fort
for utility locates within the City of Collins Water Utilities . Install
Fort Collins . Contact other utilities as meter as specified in a precast
required . vault . Inspection of service line
(where appropriate ) , vault , water
8 . 3 . 2 Preliminary inspection . meter and backf low is to be
The Contractor shall inspect tap and any coordinated with the City of Fort
existing irrigation system , as applicable , Collins Utilities .
prior to work . C . The contractor shall install a
winterization assembly downstream
of the meter vault a minimum of 6
INSTALLATION PROCEDURES feet away from the outside of the
meter vault on the copper pipe .
8 . 4 . 1 Water service connections D . Copper pipe shall be soldered so
(taps ) : that a continuous bead shows
around the joint circumference .
A . Forty - eight hours prior to Insert a dielectric union wherever a
connection , the contractor shall copper - based metal ( copper , brass ,
contact the City of Fort Collins bronze ) and an iron - based metal
Water Utilities , at 221 - 6700 to ( iron , galvanized steel , stainless
schedule the work for water taps steel ) are joined ,
and inspections . A minimum two
weeks prior notice shall be given to 8 . 4 . 2 Pipe trenching :
the Water Meter Shop , 221 - 6759 , for
installations which will require A . Install pipe in open - cut trenches of
meters and / or backflow devices sufficient width to facilitate
larger than 2 inches . thorough tamping / puddling of
B . The contractor shall be responsible suitable backfill material under and
for excavation , connection to over pipe .
corporation stop at the water main , B . Trenches shall be as straight as
providing and installing the saddle possible , but when a bend of 20
for the PVC or A . C . pipe , making
degrees or more is necessary ,
the connection to the existing proper fittings shall be used to
water service , backfill and reduce stress on the pipe .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 55
C . Trench depths for mainlines shall H . Sleeves shall be laid to drain at
be a minimum of 24 inches deep minimum grade of 5 inches per 100
from top of pipe to finished grade . feet .
D . Trench depths for laterals shall be I . Sleeves shall be bedded in 2 inches
a minimum of 16 inches deep from of fill sand and covered by 6 inches
top of pipe to finished grade . of fill sand .
8 . 4 . 3 Sleeving : J . Sleeves installed for future use
shall be capped at both ends .
A . Wires shall be in separate sleeves
from pipe , and shall be 2 - inch K . Sleeving shall not have joints unless
minimum size pipe . necessary due to length of Sleeving
run . If joints are necessary , only
B . Sleeves shall have traceable marker solvent welded joints are allowed .
tape on upper side and both ends
for future locates . L . Compaction of backfill for sleeves
shall be 95% of Standard Proctor
C . Sleeves shall be installed at a depth Density, ASTM D698 - 78 . Use of
which permits the encased pipe or water ( puddling ) around sleeves for
wiring to remain at the specified compaction , is prohibited .
burial depth .
8 . 4 . 4 Pipe installation :
D . Boring for Sleeving shall not be
permitted unless an obstruction in A . Teflon tape shall be used on all
a pipe path cannot be moved , or threaded joints ; only Schedule 80
pipe cannot be re - routed . pipe may be threaded .
E . Any mainline installed in existing B . Reducing of pipe size shall be done
sleeves at a greater depth than with reducing insert couplings , at
adjacent pipe shall have a manual least 6 inches beyond the last tee
drain valve at each end if the of the larger pipe .
sleeve is longer than 20 feet , or at
one end if the sleeve is less than 20 C . PVC lateral pipe shall be snaked
feet . from side to side within the trench .
F . Sleeves shall be installed so ends D . Cut pipe ends shall be cut square
extend past edge of curb , gutter , and deburred . Pipe ends shall be
sidewalk , bikepath or other cleaned before using primer and
obstruction , a minimum of 2 feet , solvent cement . Pipe ends shall be
joined in a manner recommended
G . Sleeves shall be marked with an by manufacturer and in accordance
"x " chiseled in walk ( or other with accepted industry practices .
surface ) directly over the sleeve Joints shall cure for 30 minutes
location .
Page 1 56 CITY OF FORT COLLINS STREETSCAPE STANDARDS
before handling , and 24 hours 8 . 4 . 6 Valve installation :
before allowing water in the pipe .
A . Valves shall be installed at least 12
E . Backfill shall be free from rubbish , inches from , and aligned with , with
stones larger than two 2 - inch adjacent walls or paved edges .
diameter , frozen material and
vegetative matter . Backfill shall B , Automatic Remote Valves shall be
not be placed in freezing weather . installed so that valves are
If backfill material is rocky , the accessible for repairs . Make
pipe shall be bedded in 2 inches of electrical connections so as to allow
fill sand covered by 6 inches of fill pigtail so solenoids can be removed
sand . from the valve with 24 inches
( minimum ) slack to allow the ends to
F . After puddling or tamping , all be pulled 12 inches above ground .
trenches shall be left slightly The zone wire should be coiled .
mounded to allow for settling . Flush completely before installing
the valve . Thoroughly flush piping
G . Backfill shall be compacted to system under full head of water for
proper densities depending on three minutes through furthest
whether the surface area over the valve , before installing heads .
line will be paved or landscaped .
C . The top of the valve box shall be
8 . 4 . 5 Thrust blocks : flush with the finish grade .
A . Thrust blocks shall be installed D . The valve assembly shall include the
where PVC mainline 2 . 5 inches or ball valve and union per detail for
larger changes direction over 20 ease of maintenance and repair .
degrees . Valves shall be installed in valve
boxes per details .
B . Thrust blocks shall consist of a
minimum of one cubic foot of E . Quick couple valves shall be
concrete . installed in 10 - inch round locking
valve boxes . Valves shall be flush
C . No concrete shall be allowed to completely before installation .
remain on pipe joints . Thoroughly flush the piping system
under a full head of water for three
D . Wiring shall be placed away from minutes through the furthest valve ,
thrust blocks to avoid contact with
concrete . F . Isolation gate valves shall be
installed in the valve box .
G . Valve boxes shall be branded with
the following codes : " SV " and the
controller valve number per as - built
plans for all remote control valves ;
" DV " for all drain valves ; " GV " for
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 57
all isolation valves ; " DRGV " for all C . Pop - up heads along walks and
drip system isolation valves ; " QC " bikeways shall be bedded in a 6
for all quick coupling valves ; "WA " inch layer of sand under the base of
for all winterization assemblies ; the head . Heads that border
" FM " for all flow meter assemblies ; sidewalks and curbs shall be 1 - 1 '/2
and "MV " for all master valve inches from the concrete .
assemblies . Use a branding iron
stamp with 3 - inch high letters . D . Nozzles appropriate for best
performance shall be installed .
H . Valve boxes shall NOT rest on
mainlines . Brick or other non - E . Nozzles and radius of throw shall be
compressible material shall be used adjusted to minimize overspray
per details . onto hard surfaces .
I . Valves shall be installed in boxes 8 . 4 . 8 Electrical connections :
with adequate space to access valves
with ease . Valves shall not be too A . New connections shall be approved
deep to be accessible for repairs . A through the City of Fort Collins
3 - inch depth of 3/ - inch washed Electric Utilities . Call 221 - 6700 to
gravel shall be placed in the bottom obtain power information and
of each valve box with enough space request connection . Actual
to fully turn valve for removal per connection to transformer or other
detail . power source will be done by the
City of Fort Collins Electric Utilities .
J . Six - inch valve boxes shall be limited Work shall be coordinated and
to wire splices , drip end caps , and scheduled by calling 221 - 6700 .
drains .
B . All work other than actual
8 . 4 . 7 Head installation : connection , including access to the
transformer box where applicable ,
A . Heads shall be set plumb and level shall be supplied by the contractor .
with the finish grade . In sloped
areas , heads shall be tilted as C . All materials shall be provided by
necessary to provide the full radius the contractor . When working near
spray pattern . any City electric facility , prior
coordination and approval is
B . Lateral lines shall be flushed before required .
installing heads . Thoroughly flush
the piping system under a full head 8 . 4 . 9 Controller Installation :
of water for three minutes through
the furthest head , before installing A . Controllers shall be installed in an
the heads . Cap the risers if a delay above - ground location suitable to
of head installation occurs . prevent vandalism and provide
protection from adverse weather
conditions , and per City direction .
Page 1 58 CITY OF FORT COLLINS STREETSCAPE STANDARDS
E . Band wires together at ten ( 10 )
B . All exposed wiring to and from the foot intervals with pipe wrapping
controller shall be encased in tape ,
galvanized metal conduit .
F . Install common ground wire and
C . Exterior controllers to be installed one control wire for each remote
on a 6 - inch thick concrete pad . control valve . Multiple valves on a
single control wire are prohibited .
D . Controllers shall be installed per City Install three extra wires , as
direction and manufacturers specified , to the furthest valve on
specifications . Surge protection , the system and / or each branch of
grounding rods and other accessory the system .
components shall be included as
specified .
E . Wire markers shall be attached to TESTING
the ends of control wires inside the
controller unit . Label wires with the 8 . 5 . 1 Testing requirements :
identification number of the remote
control valve activated by the wire . A . All tests shall be run in the
presence of staff from the City
8 . 4 . 10 Wiring : Parks Division . Schedule all tests a
minimum of forty - eight hours in
A . Wiring shall comply with City of advance . Repeat any failed tests
Fort Collins Electrical Code . until full acceptance is obtained .
B . The power source shall be brought B . An operational test shall activate
to the controller via a ground fault each remote control valve from the
receptacle installed within the controller .
controller casing .
C . The contractor shall replace , adjust
C . Control wires shall be strung as or move heads and nozzles as
close as possible to the mainline , needed to obtain acceptable
consistently along and slightly performance of the system as
below one side of the pipe . directed by staff .
D . A minimum loop of 24 inches shall D . The contractor shall replace
be left at each valve and defective valves , wiring or other
controller , and at each splice , at appurtenances to correct
the ends of each sleeve , at 100 - foot operational deficiencies .
intervals along continuous runs of
wiring , and changes of direction of
90 degrees or more .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 59
H . All excess materials , tools , rubbish
and debris shall be removed to
COMPLETION SERVICES leave a cleaned - up site .
8 . 6 . 1 Requirements upon 8 . 6 . 2 Warranty and maintenance
completion of construction : period .
A . When project construction is A . A two - year warranty and
complete , the contractor shall maintenance period provided by
request a punchlist inspection for the contractor shall begin upon
construction acceptance from the construction acceptance by the
City Parks Division . City Parks Division .
B . The system shall be demonstrated B . The system shall be maintained in
to staff from the City Parks optimal working condition for the
Division . duration of the period between
construction acceptance and final
C . Product ordering information shall acceptance . Periodic adjustments
be provided to City Parks Division shall be made to achieve the most
staff including model numbers , effective and efficient application
sizes and styles for all components , of water .
D . Electronic as - built drawings shall 8 . 6 . 3 Final acceptance :
be provided .
E . Two sets of as - built drawings shall A . The contractor shall schedule a
be provided , showing the system final acceptance inspection by the
as installed with each sheet clearly City Parks Division at least thirty
marked " As - built Drawings " , the days before the end of the one - year
name of the project , and all maintenance period .
information clearly provided . B . The contractor shall provide
F . The as - built drawings provided shall operating keys , servicing tools , test
consist of one set of reproducible equipment , warranties / guarantees ,
mylars , no larger than 24" x 3611 maintenance manuals , and the
and one set of all sheets reduced to contractor's affidavit of release of
11 " x 17" , with each station color liens . Submittal of all these items
coded , and each sheet plastic must be accompanied by a
laminated . transmittal letter and delivered to
the City Parks Division offices
G . A completed backflow test for the ( delivery at the project site is not
backflow prevention device shall be acceptable . )
provided by a licensed backflow
tester .
Page 1 60 CITY OF FORT COLLINS STREETSCAPE STANDARDS
C . The yearly backf low test report on
the backflow device shall be
submitted to the City Parks
Division ,
GUARANTEE/WARRANTY AND
REPLACEMENT
8 . 7 . 1 Requirements .
For the period following construction
acceptance notice by the City , and
prior to final acceptance , all irrigation
materials , equipment , workmanship
and other appurtenances are to be
guaranteed and warranted against
defects . Settling of trenches or other
depressions , damages to structures or
landscaping caused by settling and
other defects shall be corrected by the
contractor at no cost to the City .
Repairs shall be made within seven
days of notification by the City Parks
Division . The guarantee and warranty
shall apply to all originally installed
materials and equipment , and to
replacements made during the
guarantee / warranty period .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 161
Page 1 62 CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 9 aw
Fine Grading And SUBMITTAL '
Sooll Preparation 9 . 2 . 1 Soil Amendments .
Standards Submit a representative sample and
written confirmation from the supplier
of soil amendment material
composition including : percent organic
GENERAL STANDARDS matter , salts , nutrient composition and
trademark .
Soil preparation is a crucial part of 9 . 2 . 2 Topsoil .
streetscape landscaping success .
Individual projects may require Submit a representative sample and
specially tailored soil preparation , written confirmation from supplier of
beyond the scope of these minimum material composition including :
standards , for sustainable health of percent organic matter , salts , and
specialized plantings . nutrient composition .
9 . 1 . 1 Soil testing . Me
Soils tests conducted by the CSU Soils MATERIALS STANDARDS
Lab must be completed and submitted
to the City for review ; and 9 . 3 . 1 Soil Amendment .
recommendations in the lab reports Premium 3 , by A - 1 Organics, or an
shall be followed in all cases . Generally approved equal high quality composted
this will include soil amendment and material containing a minimum of 50%
fertilizer recommendations ; and in some organic matter shall be required for all
cases , complete replacement of topsoil soil amendment . The mixture shall be
may be required . free from clay subsoil , stones , lumps ,
plants or roots , sticks , weed stolons ,
9 . 1 . 2 Topsoil required . seeds , high salt content and other
If a landscape area is undisturbed , materials harmful to plant life . The
topsoil shall be stripped to a 6 - inch compost shall be coarsely ground with
depth , or to topsoil depth as an even composition and have an acidity
determined by field inspection . in the range of pH 5 . 5 to pH 7 . 0 . All
Stockpile and re - spread stripped topsoil material shall be sufficiently
over landscape areas after rough grades composted such that no original source
are established . If the site has been material used is recognizable .
disturbed , or sufficient topsoil is not
available , topsoil shall be imported to 9 . 3 . 2 Topsoil .
achieve six 6 - inch depth in all Topsoil must be taken from a well
landscaped areas . drained , arable site and shall be
reasonably free of subsoil , stones ,
clods , sticks , roots and other
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 63
objectionable extraneous matter or Apply herbicide to areas where noxious
debris . No stones or other materials weed beds have been established and /
over 2 inches in size shall be allowed . or where seed mix is to be planted .
Topsoil shall contain no toxic materials Herbicide must be applied by certified
and have an acidity in the range of pH contractors at the rate recommended by
5 . 5 to pH 8 . 5 * the manufacturer after proper
notification has been done in
9 . 3 . 3 . Fertilizer . accordance with the chemical
Triple superphosphate with a chemical applicator' s standards .
analysis of 0 - 46 - 0 shall be incorporated
into soil along with soil amendment . 9 . 4 . 6 Rip planting areas .
Rip to 8 - inch depth with agriculture
subsoiler in all areas to receive
plantings . Remove all objects greater
ROUGH GRADING OPERATIONS than 2 inches in diameter .
9 . 4 . 1 Utility locates . PW
All utilities shall be located prior to FINISH GRADING OPERATIONS
trenching and shall be protected from
damage . Required calls shall include ,
but are not limited to the following : 9 . 5 . 1 Topsoil placement shall include
221 - 6660 for Parks Division locates and the following procedures :
1 - 800 - 922 - 1987 for utility locates .
A . Spread 6 inches of topsoil over the
9 . 4 . 2 Acceptance of rough grading by entire landscaped area and grade
other contractors . to smooth and even lines . Establish
The landscape contractor shall inspect swales and drainage as required per
and confirm that any rough grading plans .
from other contractors is per approved
plans , and allows for 6 - inch minimum B . Evenly distribute soil amendment
depth of topsoil and specified soil at rate of 3 cubic yards per 1 , 000
amendments . square of area , or 1 - inch depth over
the entire area to be prepared .
9 . 4 . 3 Clearing and grubbing . Modify the rate if a soil test
The contractor shall grub and remove recommends otherwise . Till
unsuitable woody and rock material amendments into top 6 inches of
present in the surface grade . soil . Compact to a firm , but not
hard density ( 80% of Standard
9 . 4 . 4 Maintain drainage . Proctor Density at 2% optimum
The contractor shall take precautions moisture ) . Evenly distribute triple
to accommodate proper drainage and superphosphate fertilizer at the
flow during and after grading and soil rate of 15 pounds per 1 , 000 square
feet . Modify the type and rate if a
preparation .9 . 4 . 5 Kill weeds . soil test recommends otherwise .
Page 1 64 CITY OF FORT COLLINS STREETSCAPE STANDARDS
C . Trim finish grade elevations
adjacent to paved areas to one inch
below pavement finish grade .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 65
Page 1 66 CITY OF FORT COLLINS STREETSCAPE STANDARDS
SECTION 10 10 . 1 . 5 Seed quality .
Grass Seeding Seed shall be of fresh , clean , new crop
seed composed of the varieties
Standards approved by the City with tested
minimum percentages of purity and
germination clearly labeled on the
package . All seed shall be at least
GRASS SEEDING 99 . 9% free of Poa annua and all weeds .
10 . 1 . 1 Seed Mixes . 10 . 1 . 6 Mulch for seeded areas .
Seed mixes shall be approved by the Mulch depends on the slope of the
seeded area as follows :
City Parks Division based on the activity
to take place , planned irrigation A . For slopes 30% and less , native
method and maintenance to be grass straw without weed seed and
performed in the area being seeded . consisting of grasses as specified
for the seeded application shall be
10 . 1 . 2 Pre - approved Dryland Mix . used .
For temporary or permanent unmowed
and non - irrigated areas , the following B . For slopes 30% and greater :
mix shall be permitted : Hydromulch using Weyerhauser
"Silva - Fiber" mulch or approved
45 % Blue Grama , equal shall be used . The mulch
25 % Buffalograss ( treated ) , and shall not contain any substance
30% Little Bluestem . which might inhibit germination or
growth of grass seed . The mulch
10 . 1 . 3 Pre - approved turfgrass mix . shall be dyed a green color to allow
For irrigated , mowed areas , the metering of its application .
following mixes shall be permitted : 1 ) a
blend of five turf type dwarf Tall 10 . 1 . 7 Tackifier .
Fescues , or 2 ) a mix of Kentucky Teratack III , or approved equal shall be
Bluegrass varieties and up to 15% used .
Perennial Rye .
10 . 1 . 8 Netting .
10 . 1 . 4 Submittals . For slopes greater than 30% , Soil Saver
Certificates showing State , Federal or jute netting or approved equal shall be
other inspection showing source and used . Netting shall be stapled with No .
origin shall be submitted . 11 gauge steel wire forged into a 6 - inch
long U - shape , and painted for visibility
in mowed areas .
10 . 1 . 9 Fertilizer .
Fertilizer . Fertilizer with a formula of
18 - 46 - 0 shall be used on all areas to be
seeded . Apply 8 pounds per 1 , 000
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 67
square foot of seeded area and rake 10 . 1 . 13 Seeding rates .
lightly into top 1 / 8 inch of soil just The following rates of application shall
prior to seeding operation . apply :
10 . 1 . 10 Inspection . A . Dryland Mix - 12 pounds pure live
The contractor shall inspect finish seed per acre .
grade and trim where needed to obtain
finish grades of one inch below B . Irrigated Mix - 9 pounds pure live
adjacent pavements . Verify positive seed per acre for the Tall Fescue
drainage away from all structures . blend , or 4 pounds pure live seed
Verify or complete removal of rock and for the Kentucky Blue / Perennial
debris larger than one inch from all Rye mix .
areas to be seeded .
10 . 1 . 14 Mulching operations for
10 . 1 . 11 Weather for seeding . native grass mulch .
Seed shall not be sown in windy weather Mulch shall be applied at a rate of two
or when ground is frozen or otherwise 2 tons per acre within 24 hours after
untillable . seeding .
10 . 1 . 12 Methods for seeding : 10 . 1 . 15 Hydromulching operations .
A . A brillion type drill or hydraulic Wood cellulose fibers shall be evenly
seeding methods may be used . dispersed by agitatation in water .
Drill the seed in a manner such that When sprayed uniformly on the soil
after surface is raked and rolled , surface , the fibers shall form a blotter -
the seed has 1/4 - inch of cover . like ground cover that readily absorbs
water and allows infiltration to the
B . Hydraulic seeding shall be used in underlying soil . Cellulose fiber mulch
areas that are not accessible for shall be added with the proportionate
machine methods . A hydraulic quantities of water and other approved
pump capable of being operated at materials in the slurry tank . All
100 gallons per minute and at 100 ingredients shall be mixed to form a
pounds per square inch pressure homogenous slurry . Using the color of
shall be used . The equipment shall the mulch as a metering agent , spray
have an acceptable pressure gauge apply the slurry mixture uniformly over
and a nozzle adaptable to hydraulic the seeded area . Apply with tackafier
seeding requirements . Storage used at a rate of 120 pounds per acre .
tanks shall have a means of Unless otherwise ordered for specific
agitation and a means of estimating areas , fiber mulch shall be applied at
the volume used or remaining in the rate of 2 , 000 pounds per acre .
the tank . Do not seed and mulch in Hydraulic mulching shall not be
the same operation . performed in the presence of free
surface water resulting from rains ,
melting snow or other causes .
Page 1 68 CITY OF FORT COLLINS STREETSCAPE STANDARDS
10 . 1 . 16 Mulch netting operations .
Mulched areas over 30% slope shall be
stabilized with netting . If the
contractor fails to net and subsequent
soil erosion occurs , the contractor shall
re - establish the finish grade , soil
preparation , seed bed , and apply
netting at no cost to the City .
10 . 1 . 17 Watering .
Immediately after seeding and
mulching , water the seeded area
slightly to a depth of 2 inches , but with
care so that no erosion takes place and
no gullies are formed . Water lightly
two times per day and keep the seeded
area moist until turf is established .
Sloped areas shall be hand watered
until turf is established to prevent
erosion . Water these areas more often
but for shorter periods of time .
10 . 1 . 18 Clean up .
All hydromulch and other mulch
materials shall be removed from all
plant materials , fences , concrete and
other areas except for the seed bed .
10 . 1 . 19 Protection of seeded areas
for establishment .
The contractor shall provide and install
barriers as required to protect seeded
areas from pedestrian and vehicular
damage . Signage shall be provided if
needed .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 69
Page 1 70 CITY OF FORT COLLINS STREETSCAPE STANDARDS
EXHIBIT A
list of
Recommended
Plants
The list below contains recommended
plant species for streetscapes . This list
will be monitored by staff as part of an
ongoing program with periodic updates
based on evaluation of success of
plantings over time .
Designers of individual streetscape
projects may propose plants not on the
list based on the design intent for the
particular project .
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 71
• • I I 11411 Le LM •
Last Amended 11 . 8 . 2012
•
CO native status as
Key. E:1 determined by USDA
Plants Database
Canopy Shade Trees
Acer negundo - Boxelder 'Sensation '
Catalpa speciosa - Northern Catalpa Tolerant of alkaline soils ; holds a strong
dominant leader; male tree so no
boxelder bugs
Celtis occidentalis - Northern Hackberry
Gleditsia triacanthos v. inermis - Honeylocust ' Imperial , ' Wrap young trees
'Shademaster' , 'Skyline '
Gymnocladus dioicus - Kentucky Coffeetree ' Espresso'
Quercus buckleyi - Texas Red Oak Many seed sources , not predictably cold
hardy
Quercus macrocarpa - Bur Oak Slow growing
Quercus muehlenbergii - Chinkapin Oak
Quercus robur - English Oak, Skymaster
Quercus shumardii - Shumard Oak From a northern source
Tilia americana - American Linden ' Boulevard ' , ' Frontyard ' , Do not use in along roads that are treated
' Legend ' , 'Sentry' with deicing salts
Tilia cordata - Littleleaf Linden ' Chancellor' , ' Dropmore' , Do not use in along roads that are treated
' Greenspire' , ' Norlin ' , 'Olympic' , ' Prestige' , 'Shamrock' with deicing salts
Tilia x euchlora - Redmond Linden Do not use in along roads that are treated
with deicing salts
Tilia x flavescens - Glenleven Linden Do not use in along roads that are treated
with deicing salts
Ulmus davidiana - David Elm
Ulmus japonica x U. wilsoniana — Elm 'Accolade' , 'Triumph ' Use in smaller quantities
Ornamental Trees
Acer grandidentatum - Wasatch Maple
Acer tataricum - Tatarian maple ` Hot Wings ' , ' Pattern
Perfect'
Crataegus crusgalli - Thornless Cockspur Hawthorn
Malus sp. - Crabapple 'Adams' , ' Profusion' , 'Radiant' , 'Spring Spring Snow' has some limited fireblight
Snow' , 'Thunderchild ' problems .
Pyrus calleryana - Flowering Pear 'Aristocrat' , 'Capital' ,
'Chanticleer' , 'Cleveland Select' , ' Redspire'
Quercus gambelli - Gambel Oak
Quercus alba x robur — Oak `Crimson Spire'
Syringa reticulata - Japanese Tree Lilac ' Ivory Silk'
Page 1 72 CITY OF FORT COLLINS STREETSCAPE STANDARDS
=1comments
Large Evergreen Trees
Picea Pungens - Blue Spruce ' Fat Albert' , ' Baby Blue Eyes' Sensitive to salt.
Pinus nigra - Austrian Pine Only use in wide medians .
Small Evergreen Trees
Juniperus scopulorum - Rocky Mountain Juniper
'Cologreen ' , 'Moonglow' , 'Wichita Blue'
Juniperus monosperma - Oneseed Juniper Very low water use
Picea pungens - Dwarf Blue Spruce 'Sester' , 'Globosa' ,
' Montgomery'
Pinus mugho - Mugo Pine 'Tannenbaum '
Shrubby Trees/Large Shrubs
Acer grandidentatum - Bigtooth Maple
Quercus gambelli - Gambel Oak
Cercocarpus ledifolius - Curlleaf Mountain- Mahogany
Xanthoceras sorbifolia - Yellowhorn
Rhus glabra, R. glabra cismontana - Smooth Sumac, Rocky
Mountain Smooth Sumac
Deciduous Shrubs
Amelanchier alnifolia - Regent Serviceberry
Amorpha canescens - Leadplant Deadhead
Amorpha nana - Dwarf Leadplant Deadhead
Aronia arbutifolia - Red Chokeberry
Aronia melanocarpa - Chokeberry, Dwarf Iroquois Beauty
Artemisia tridentata - Tall Western Sage
Atriplex canescens - Fourwing Saltbush
Caragana pygmaea - Pygmy Peashrub
Caragana roses - Rose Peashrub
Ceratoides lanata - Winterfat
Cercocarpus ledifolius - Curl Leaf Mountain Mahogany Can grow to be quite large with too much
water
Cercocarpus ledifolius intricatus - Little Leaf Mountain
Mahogany
Cercocarpus montanus - True Mountain Mahogany
Chamaebatiaria millefolium - Fernbush Deadhead
Chrysothamnus nauseosus nauseosus - Dwarf Blue Gets large with irrigation
Rabbitbrush
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 73
14
Chrysothamnus nauseosus apcculatus - Tall Blue
Rabbitbrush
Chrysothamnus nauseosus graveolens - Green Rabbitbrush
Caryopteris incana - Blue Mist Spirea Shear back after blooming , prune out
dead wood annually
Caryopteris x clandonensis - Dark Knight Spirea Used on Harmony project
Cotoneaster apiculatus - Cranberry Cotoneaster
Cotoneaster horizontalis - Rock Cotoneaster
Cytisus scoparius 'Burkwoodii' - Red Burkwoodii Broom
Ephedra equisetina - Bluestem Joint Fir
Ephedra viridis - Mormon Tea
Euonymus alatus 'Compactus ' - Dwarf Burning Bush
Fallugia paradoxa - Apache Plume
Ligustrum vulgare 'Lodense ' - Lodense Privet
Physocarpus monogynus - Mountain Ninebark
Physocarpus opulifolius - Ninebark
Potentilla fruticosa - Potentilla
Potentilla fruticosa davurica 'Prairie Snow' - Prairie Snow
Potentilla
Potentilla fruticosa ' Yellow Gem ' - Yellow Gem Potentilla
Prunus besseyi 'Pawnee Buttes ' - Creeping Western Sand
Cherry
Rhus aromatica'Gro-low' - Fragrant Dwarf Sumac Needs ample space
Rhus glabra cismontana - Rocky Mountain Sumac Needs ample space
Rhus trilobata 'Autumn Amber' - Creeping Three-leaf Sumac
Ribes aureum - Golden Currant
Ribes cereum - Wax Currant
Rosa x var. - Shrub Rose Remove deadwood each spring , many
will continue blooming if deadheaded .
Spiraea nipponica - Snowmound Spirea
Spiraea thunbergii - Mellow Yellow Spirea
Spiraea x vanhouttei - Vanhoutte Spirea
Symphoricarpos occidentalis - Snowberry
Symphoricarpos orbiculatus - Red Coralberry
Symphoricarpos x chenaultii - ' Hancock' Coral berry
Syringa meyeri - Dwarf Korean Lilac Looks best when deadheaded after
blooming
Syringa patula 'Miss Kim ' - Miss Kim Dwarf Lilac Looks best when deadheaded after
blooming
Page 74 CITY OF FORT COLLINS STREETSCAPE STANDARDS
•
Evergreen Shrubs
Juniperus chinensis - Chinese Juniper
Juniperus communis - Common Juniper
Juniperus horizontalis - Creeping Juniper
Juniperus monosperma - Oneseed Juniper
Juniperus scopulorum - Rocky Mountain Juniper
Picea pungens - Globe Spruce
Pinus mugo - Mugo Pine
Evergreen ( Broad -leafed )
Arctostaphylos uva-ursi - Kinnikinnick
Arctostaphylos x coloradoensis panchito - Panchito
Manzanita
Euonymus kiautschovicus - Manhattan Euonymus
Yucca filamentosa - Adam 's needle Yucca
Yucca glauca - Soapweed
Ornamental Grasses
Boutelous gracilis - Blue Grama Grass Winter interest ; cut back in spring
Bouteloua gracilis - Blonde Ambition ' Blue Grama Grass
Deschampsia caespitosa - Tufted Hair Grass
Festuca ovina glauca - Blue Fescue
Pennisetum alopecuroides - Fountain Grass This acts more like an annual
Schizachyrium scoparium - Little Bluestem
Sorghastrum nutans - Indiangrass
Perennials
Achillea filipendulina 'Parker's Variety' - Tall Yellow Yarrow Deadhead
Achillea 'Moonshine ' - Moonshine Yarrow Deadhead
Asclepias tuberosa - Butterfly Weed
Agastache ' Coronado Red' - Coronado Red Hyssop Do not cut back until spring to promote
overwintering
Agastache cana 'Sonoran Sunset' - Sonoran Sunset Hyssop Do not cut back until spring to promote
overwintering
Agastache rupestris - Sunset Hyssop Do not cut back until spring to promote
overwintering
Artemisia frigida - Fringed Sage
Artemisia schmidtiana - Silver Mound Sage Cut back in mid-summer when sprawls
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 75
•
Artemisia versicolor - Sea Foam Sage
Coreopsis verticillata 'Zagreb' - Coreopsis Grows well in rocky, well drained soil
Echinacea purpurea - Purple Coneflower Deadhead , if too much irrigation , will get
root fungus
Echinacea purpurea 'White Swan ' - White Coneflower Deadhead , if too much irrigation , will get
root fungus
Erigeron speciosus var. macranthus - Aspen Fleabane ,
Aspen Daisy
Gailardia aristata - Native Blanket Flower Short lived
Geranium cinereum - ' Ballerina' Cranesbill
Geranium dalmaticum - Compact Rose Cranesbill Alpine and rock gardens , does not seed
out
Geranium endressii - 'Wargrave Pink' Pink Cranesbill Attractive to pollinators
Geranium himalayense 'Plenum ' - Birch Double Cranesbill Very showy
Geranium x 'Johnson 's Blue ' - Blue Cranesbill
Geranium sanguineum - Bloody Cranesbill
Hemerocallis spp. - Daylily Deadhead , cut back in late fall
Hesperaloe parviflora - Red False Yucca Needs good drainage , don 't use bark
mulch around crown , marginal hardiness
Lavandula angustifolia - Lavender Shear back after bloom , can have winter
dieback
Liatris punctata - Gayfeather, Dotted Blazing Star
Liatris spicata 'Floristan Violet' - Purple Gayfeather
Linum flavum 'Compactum ' - Yellow Flax
Lychnis coronaria - Rose Compion Bennial , reseeds aggressively
Oenothera macrocarpa - Missouri Primrose Self sows
Penstemon pinifolius - Pineleaf Penstemon Shear back after bloom
Penstemon strictus - Rocky Mountain Pentstemon Deadhead
Persicaria affinis - Himalayan Border Jewel
Rudbeckia fulgida 'Goldsturm ' - Black-Eyed Susan Other varieties may live longer
Salvia pachyphylla - Mojave Sage Marginal hardiness , needs excellent
drainage
Sedum 'Autumn Joy' - Stonecrop
Groundcovers
Alyssum montanum - Mountain Basket of Gold
Callirhoe involucrata - Winecups Self sows . Cut back after first flush of
blooms to promote new growth
Ceratostigma plumbaginoides - Plumbago Can die out in winter
Euonymus fortunei - Euonymus Invasive in some states
Polygonum reynoutria - Fleeceflower Considered invasive in many states ; plant
where it can be contained
Page 76 CITY OF FORT COLLINS STREETSCAPE STANDARDS
CITY OF FORT COLLINS STREETSCAPE STANDARDS Page 1 77