Front Range Tree
Recommendation List
This Front Range Tree Recommendation List © was
developed through the collaborative efforts of 12 individuals,
three from each of the four participating professional groups:
the American Society of Landscape Architects(ASLA), the Colorado Nursery & Greenhouse Association (CNGA), municipal
arborists representing the Colorado Tree Coalition (CTC), and
the Colorado State University (CSU) Extension. Based on the
committee’s collective education, knowledge, and experience
over 250 trees or varieties were evaluated and rated, resulting
in a single reference list for professionals to use and share with
their customers or residents.
The purpose of this project was to create a Front Range tree
list for use by Green Industry professionals based on decades
of actual experience growing and caring for trees in our area.
This list is intended to assist those involved in the buying,
growing, selling, selection, siting, and specification of trees,
with the ultimate goal of a healthy, diverse, and geographically
appropriate landscape and urban forest. The ratings apply
to the Colorado Front Range, generally defined as the region
from Colorado Springs to the Wyoming border and from the
foothills to the eastern plains. We encourage industry professionals to prepare similar lists for other geographic regions
using this as a template.
The initial list of evaluated trees was based on a compilation
of six 2010 Front Range Nursery catalogs plus recommendations from committee members. The group evaluated each tree
based upon 5 Critical and 8 Cautionary Cultural Factors, resulting in one of four ratings:
A - Generally Recommended.
A tree is Generally Recommended if it has consistently
displayed no serious vitality issues related to any of the five
Critical factors.
B - Conditionally Recommended. A tree is Conditionally Recommended if it has consistently displayed serious vitality issues
related to one or more of the five Critical factors. Some cultural
factors such as sun scald can be mitigated thru proper horticultural care, in this case using tree wrap.
C - Potential/Unproven. A tree is listed as Potential/Unproven
if it is offered for sale locally and has the potential to do well
here (a USDA Hardiness Zone Rating of 5 or below), but the
committee has less than ten years of experience growing and
maintaining a significant population of the tree in our area. As
this list is periodically updated, the intention is to move trees
with a C rating to one of the other categories based upon the
collective experience of the list users.
D - Not Recommended. A tree is Not Recommended if it has
consistently displayed overwhelming vitality issues related to
one or more of the five Critical factors or can be expected to do
poorly under normal circumstances.
When using this list to assist in tree selection for a specific
planting location, a site analysis relating to the cultural factors,
including a soil test to determine pH, texture, and composition
should be performed. We assume the list users are aware of
©
the physical attributes of these
trees (mature size, fall color, growth habit, texture, flowers,
fruit, etc) or have access to this information.
The Front Range Tree Recommendation List © is downloadable
on the websites of the CNGA, ASLA, CTC, and CSU Extension.
This hardcopy document was paid for with contributions from
the GreenCO Foundation and the Colorado Nursery Research
and Education Foundation (CNREF). If you are interested in
participating in future updates of this list, please provide your
contact information on the CNGA website, coloradonga.org.
Click on Resources and Tree List.
COMMITTEE MEMBERS
Landscape Architects - ASLA: Gail Barry; David Flaig;
Don Godi
Nurserymen - CNGA: Stan Brown; Matt Edmundson;
Gary Epstein
CSU Representatives: Robert Cox; Jim Klett, PhD;
Alison O’Connor
Municipal Arborists - CTC: Tim Buchanan, Fort Collins;
Scott Grimes, South Suburban Parks; Michael Swanson,
Denver
Copyright 2010 Colorado Nursery & Greenhouse Association
DECIDUOUS ALPHA-BOTANIC
Botanical Name
Variety or Common Name
Plant Nomenclature from Manual of Woody Landscape
Plants by Michael A. Dirr 2009 edition.
2
Rating
Critical
Maple
Acer campestre
B
Acer x freemanii
Hedge
Freeman - 'Armstrong', Autumn Blaze®,
Autumn Fantasy®, Celebration®, Sienna
Glen®
Acer ginnala
Amur/ Ginnala - 'Flame'
B
Acer glabrum
Rocky Mountain
B
Acer grandidentatum
Acer grandidentatum
Acer griseum
Acer miyabei
Acer negundo
Acer palmatum
A
C
C
C
C
B
Acer saccharum
Acer tataricum
Acer tataricum
Acer tataricum
Big Tooth
Big Tooth - Manzano™
Paperbark
Miyabe
Boxelder/ Ash-leaved - 'Sensation'
Japanese
Norway - 'Columnare', 'Crimson King',
'Crimson Sentry', 'Deborah', Emerald
Lustre®, 'Emerald Queen', Fairview®,
'Royal Red'
Korean/Purplebloom
Red - Autumn Flame®
Red - Burgundy Belle®
Red - Northwood®
Red - October Glory®
Red - Redpointe®
Red - Red Sunset®
Silver - 'Silver Queen'
Silver - 'Skinner'
Sugar - Green Mountain®
Sugar - Legacy®
Sugar - Caddo 'John Pair', 'Autumn
Splendor'
Tartarian
Tatarian -Hot Wings®
Tatarian - Pattern Perfect™
C
A
A
A
x
Acer truncatum x platanoides
Norwegian Sunset®
C
Aesculus
Aesculus arguta
Aesculus glabra
Aesculus hippocastanum
Aesculus octandra(flava)
Aesculus x carnea
Aesculus x carnea
Alnus
Alnus glutinosa
Alnus tenuifolia
Amelanchier
Amelanchier alnifolia
Buckeye/Horsechestnut
Texas
Ohio
Common Horsechestnut
Yellow
'Briotti'
'Fort McNair'
Alder
Common /Black
Thinleaf/ Mountain
Serviceberry
Saskatoon
x
KEY
Other
Cautionary
SC ST ID CH SA TS WW SL SU RS TR LS EX WN LA
Acer
Acer platanoides
Acer pseudosieboldianum
Acer rubrum
Acer rubrum
Acer rubrum
Acer rubrum
Acer rubrum
Acer rubrum
Acer saccharinum
Acer saccharinum
Acer saccharum
Acer saccharum
Comments:
Cultural Factors
B
B
C
B
C
B
B
C
B
B
B
B
B
l-m
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
A
A
A
C
C
C
B
A
A
x
x
m
Develops chlorosis in alkaline soils
l-m
Can develop chlorosis in alkaline soils
m-h
x
x
x Variable hardiness from seed; prone to winter dieback in hard early freezes
Prefers more moisture
l-m
l-m
x m
l-m
l-m
x m-h
x
x
x
x
x
m
x m
m
m
m
m
m
m
m
m
m
m
Acer platanoides is prone to sunscald and leaf scorch in hot dry sites
x More tolerant of heavy soils than Acer palmatum , but still needs protection
Chlorosis; Acer rubrum needs an acidic soil
x Develops chlorosis in alkaline soils
Develops chlorosis in alkaline soils
Develops chlorosis in alkaline soils
x Develops chlorosis in alkaline soils
Develops chlorosis in alkaline soils
Develops chlorosis in alkaline soils
x Develops chlorosis in alkaline soils
Acer saccharum prefers well drained, neutral to acidic soils
x Can develop chlorosis in alkaline soils
x l-m
l-m
l-m
l-m
x Alkaline tolerant; needs protected site
x
More tree-like than Acer grandidentatum
Needs a protected site; does not transplant well when bare rooted
Typically budded to A.campestre that shows variable hardiness from seed
Tolerant of alkaline soils; holds a strong dominate leader; male tree so no boxelder bugs
Prefers well drained soils low in salt content with some protection
l-m
x Prone to winter dieback in early hard freezes & possible death at -30°
x
x
x
x
x
l-m
m
m
m
m
m
x More heat tolerant than A.glabra
x Some chlorosis; prone to leaf scorch in hot dry sites
x
x
x
x
x
m-h
m-h
Leaf miner; leaf scorch in hot dry sites
Leaf miner; leaf scorch in hot dry sites
l-m
Best used as multi-stem
x
Deciduous Alpha-Botanic
CRITICAL: SC=Soil Chemistry • ST=Soil Texture • ID=Insects & Diseases • CH= Cold Hardiness • SA=Salt Tolerance
CAUTIONARY: TS=Tree Wrap/Sun Scald • WW=Weak Wood • SL=Short Lived • SU=Suckers • RS= Re-seeds • TR=Transplants • LS=Leaf Scorch • EX=Exposure
OTHER: WN= Water Needs • LA= Limited Availability
DECIDUOUS ALPHA-BOTANIC
Botanical Name
Variety or Common Name
Plant Nomenclature from Manual of Woody Landscape
Plants by Michael A. Dirr 2009 edition.
3
Rating
Critical
Amelanchier canadensis
Shadblow
A
Amelanchier laevis
Amelanchier lamarckii
C
C
Amelanchier x grandiflora
Allegheny -'Snowcloud', Spring Flurry®
Lamarck
Autumn Brilliance®, 'Princess Diana', 'Robin
Hill'
Betula
Betula nigra
Betula occidentalis
Betula papyrifera
Betula pendula
Betula platyphylla
Carpinus
Carpinus betulus
Carpinus betulus
Catalpa
Catalpa ovata
Catalpa speciosa
Celtis occidentalis
Cercis
Cercis canadensis
Cercis canadensis
Cercis canadensis
Cercis canadensis
Cladrastis kentukea
Cornus
Cornus controversa
Cornus mas
Corylus colurna
Crataegus
Crataegus crusgalli
Crataegus ambigua
Crataegus douglasii
Birch
River - Heritage®
Rocky Mountain/ Water
Paper
European White - 'Gracilis'
Asian White - 'Whitespire'
Hornbeam
European - 'Frans Fontaine'
'Fastigiata' ('Pyramidalis')
Catalpa
Chinese
Northern/ Western
Common
Redbud
Eastern
Eastern - 'Alba'
Eastern - 'Forest Pansy'
Eastern -Lavender Twist™
American Yellowwood
Dogwood
Giant - 'June Snow'
Cornelian Cherry
Turkish Filbert/Hazelnut
Hawthorn
Cockspur var. inermis
Russian
River/Douglas
Crataegus laevigata
Crataegus mollis
Crataegus x mordenensis
Crataegus phaenopyrum
Crataegus viridis
Crataegus x lavallei
English - 'Crimson Cloud', 'Pauls Scarlet'
Downy
'Toba'
Washington
Green - 'Winter King'
Lavalle
European Beech - 'Roseomarginata',
'Tricolor'
Ash
White - Autumn Purple®
White - 'Empire'
Manchurian - 'Mancana'
KEY
Fagus sylvatica
Fraxinus
Fraxinus americana
Fraxinus americana
Fraxinus mandshurica
Comments:
Cultural Factors
Other
Cautionary
SC ST ID CH SA TS WW SL SU RS TR LS EX WN LA
B
x
B
B
B
B
B
x
x
x
x
x
x
x
l-m
x
Best used as multi-stem
x
x
m
m
x
x
x
m
Best used as multi-stem
Best used as multi-stem
Prefers acid soil; develops chlorosis in alkaline soils; prone to basal suckering; best used as multi-stem
shrub.
m-h
m-h
m-h
m-h
m-h
Develops chlorosis in alkaline soils and bronze birch borer
Bronze birch borer
Bronze birch borer
Bronze birch borer
Bronze birch borer
x
x
C
B
x m
x m
x
x
A
A
A
x
x
A
C
B
C
C
x
x
x
x
x
x
x
x
x
x
x
x
C
A
C
x
A
A
B
x
B
B
B
A
A
C
B
D
D
D
l-m
l-m
l-m
x
x
x
Needs protected site
Needs protected site
x
m;mh
m
m
m
m
x
x
m
m
l-m
x
x
x
l-m
l
m
x
Northern seed source
x
x
x
m
x
Best in well drained soils
x
x
m
m
m
x
x
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time.
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time
x
x
x
Time will tell
Best used as multi-stem
m
l-m
m
m
l-m
m
x
x
x
x
x
Fireblight
Rust
Deciduous Alpha-Botanic
CRITICAL: SC=Soil Chemistry • ST=Soil Texture • ID=Insects & Diseases • CH= Cold Hardiness • SA=Salt Tolerance
CAUTIONARY: TS=Tree Wrap/Sun Scald • WW=Weak Wood • SL=Short Lived • SU=Suckers • RS= Re-seeds • TR=Transplants • LS=Leaf Scorch • EX=Exposure
OTHER: WN= Water Needs • LA= Limited Availability
DECIDUOUS ALPHA-BOTANIC
Botanical Name
Variety or Common Name
Plant Nomenclature from Manual of Woody Landscape
Plants by Michael A. Dirr 2009 edition.
4
Rating
Critical
Fraxinus nigra
Fraxinus pennsylvanica
Fraxinus pennsylvanica
Fraxinus pennsylvanica
Fraxinus pennsylvanica
Fraxinus pennsylvanica
Black - 'Fallgold'
Green - 'Bergeson'
Green -Cimmaron®
Green - Dakota Centennial™
Green -'Marshall's Seedless'
Green - 'Patmore'
D
D
D
D
D
D
Fraxinus pennsylvanica
Fraxinus pennsylvanica
Ginkgo biloba
Gleditsia
Gleditsia triacanthos v. inermis
Green - Prairie Spire®
Green - 'Summit'
Ginkgo/ Maidenhair Tree
Honeylocust
Thornless Common -Halka™
Thornless Common - Imperial®,
Shademaster®, Skyline®
Thornless Common - Sunburst®
Kentucky Coffeetree
Kentucky Coffeetree
Kentucky Coffeetree - 'Espresso'
Seven-Son Flower
Rose-of-Sharon 'Aphrodite','Ardens','Coelistis',
'Lucy','Red Heart','Woodbridge'
Black Walnut
Panicled Goldenraintree
American Sweetgum
Tuliptree
Amur Maackia
D
D
B
Cucumbertree
Galaxy
Saucer
Apple
Gala
Granny Smith
Haralred
HoneyCrisp
Jonathan
Liberty
McIntosh
Red Delicious
Royal Gala
Sweet Sixteen
Yellow Golden Delicious
Zestar
Crabapple
Adams
Brandywine®
C
C
A
Gleditsia triacanthos v. inermis
Gleditsia triacanthos v. inermis
Gymnocladus
Gymnocladus dioicus
Gymnocladus dioicus
Heptacodium miconioides
KEY
Hibiscus syriacus
Juglans nigra
Koelreuteria paniculata
Liquidambar styraciflua
Liriodendron tulipifera
Maackia amurensis
Magnolia
Magnolia acuminata
Magnolia x 'Galaxy'
Magnolia x soulangiana
Malus
Malus 'Gala'
Malus 'Granny Smith'
Malus 'Haralred'
Malus 'Honeycrisp'
Malus 'Jonathan'
Malus 'Liberty'
Malus 'McIntosh'
Malus 'Red Delicious'
Malus 'Royal Gala'
Malus 'Sweet Sixteen'
Malus 'Yellow Delicious'
Malus 'Zestar'
Malus
Malus 'Adams'
Malus x 'Branzam'
x
x
x
x
x
x
x
x
x
x
x
x
A
C
C
A
B
m
m
m
m
l-m
l-m
x
x
A
B
B
D
B
C
B
C
B
A
B
C
A
C
Other
Cautionary
SC ST ID CH SA TS WW SL SU RS TR LS EX WN LA
B
C
D
B
C
C
C
Comments:
Cultural Factors
x
x
x
x
l-m
x
x
m
l
l
m
m
l-m
m
x m
x m
x
x
x
x
l-m
l-m
x
x
x
l-m
l-m
x m
l-m
l-m
m
x
x
x
x
x
x
x
x
x
x
m
m
m
m
m
m
m
m
m
m
m
m
l-m
l-m
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time.
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time.
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time.
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time.
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time.
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time.
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time.
EAB-found in Boulder in 2013. Spread to other areas is unknown at this time.
Wrap young tree
Wrap young tree
Wrap young tree
x
x
x
x
x
x
x
Thousand cankers disease
Needs a well drained soil
x
x
x
x
x
x
Not reliable fruit producer, fireblight
Considered zone 6, fireblight
Good northern apple, subject to codling moth
Subject to codling moth
Fireblight, subject to codling moth
Subject to codling moth
Fireblight, subject to codling moth
Subject to codling moth
Fireblight, subject to codling moth
Northern selection, subject to codling moth
Subject to codling moth
Subject to codling moth
Large messy fruits, fireblight
Deciduous Alpha-Botanic
CRITICAL: SC=Soil Chemistry • ST=Soil Texture • ID=Insects & Diseases • CH= Cold Hardiness • SA=Salt Tolerance
CAUTIONARY: TS=Tree Wrap/Sun Scald • WW=Weak Wood • SL=Short Lived • SU=Suckers • RS= Re-seeds • TR=Transplants • LS=Leaf Scorch • EX=Exposure
OTHER: WN= Water Needs • LA= Limited Availability
DECIDUOUS ALPHA-BOTANIC
Botanical Name
Variety or Common Name
Plant Nomenclature from Manual of Woody Landscape
Plants by Michael A. Dirr 2009 edition.
KEY
Malus x 'Centzam'
Malus x 'Coralcole'
Malus 'David'
Malus 'Dolgo'
Malus x 'Schmidtcutleaf'
Malus 'Hopa'
Malus 'Indian Magic'
Malus 'Indian Summer'
Malus ioensis
Malus 'Prairiefire'
Malus ' Prairie Rose'
Malus ' Profusion', 'Radiant'
Malus 'Red Barron'
Malus 'Red Jade', 'Royalty'
Malus 'Robinson', 'Royal Raindrops'
Malus sargentii
Malus sargentii 'Tina'
Malus 'Spring Snow'
Malus 'Thunderchild'
Malus 'Velvetcole'
Morus alba
Phellodendron amurense
Platanus x acerifolia
Populus
Populus angustifolia
Populus deltoides
Populus sargentii
Populus sargentii
Populus tremula 'Erecta'
Populus tremuloides
Populus x acuminata
Populus x acuminata x sargentii
Populus x canescens 'Tower"
Prunus
Prunus armeniaca
Prunus armeniaca
Prunus
Prunus avium 'Bali'
Prunus avium 'Bing'
Prunus avium 'Stella Compact'
Prunus cerasifera
Prunus cerasifera
Prunus cerasus
Prunus 'Frankthrees'
Prunus maackii
Prunus 'Mount Royal'
Centurion®
Coralburst™
David
Dolgo
Golden Raindrops®
Hopa
Indian Magic
Indian Summer
Bechtel 'Plena'
Prairiefire
Prairie Rose
Profusion, Radiant
Red Barron
Red Jade, Royalty
Robinson, Royal Raindrops
Sargent
Sargent Tina
Spring Snow
Thunderchild
Velvet Pillar™
White - 'Chaparral'
Amur corktree
London Planetree -'Bloodgood'
Poplar (cottonwood)
Narrowleaf
Eastern
Plains
Sargent, Straight Plains 'Jeronimus'
Upright European, Aspen
Quaking Aspen
Lanceleaf
Highland
Tower
Apricot
Chinese
'Moongold', 'Moorpark'
Plum, Cherry
Bali
Bing
Stella Compact
Newport (Kankakee)
Newport (Minnesota)
Cherry -'Montmorency', 'North Star'
Cherry - Mt. Saint Helens®
Amur Chokecherry
Cherry -Mount Royal
5
Rating
Critical
A
A
A
B
D
B
A
A
D
B
C
A
C
D
C
A
C
A
A
C
B
C
C
B
B
A
A
B
B
A
B
D
Comments:
Cultural Factors
Other
Cautionary
SC ST ID CH SA TS WW SL SU RS TR LS EX WN LA
x
x
x
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
m
m
x m-h
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x m
m
A
A
C
B
B
B
B
A
B
B
A
l-m
m-h
m-h
m
m
m
m
m
m
x
x
x
x
x
x
x
x
x
x
m
x m
x m
m
m
m
x m
x m
m
x
x
x
x
x
x
x
x
x
Disease resistant
Disease resistant
Messy fruit; fireblight
Some fireblight
Some fireblight, messy fruit
Poor structure
Fireblight
Fireblight
Fireblight
Fireblight
Some fireblight
x
x
Some dieback
Anthracnose
x
Vigorous suckering; forms colonies. Use in native areas only
Too big for residential use
Too big for residential use
Too big for residential use
Unique form; prone to many diseases and insects
Better at high elevations, chlorosis at lower elevations, prone to many diseases & insects
Too big for residential use
Too big for residential use
Prone to many diseases and insects
x
x
Seldom sets fruit along the front range
Great fall color; seldom sets fruit along the front range
x
x
x
x
Semi- sweet cherry
Seldom sets fruit along the front range
Seldom sets fruit along the front range
Borers
Borers
Root diseases if too wet
Self fruitful plum
Deciduous Alpha-Botanic
CRITICAL: SC=Soil Chemistry • ST=Soil Texture • ID=Insects & Diseases • CH= Cold Hardiness • SA=Salt Tolerance
CAUTIONARY: TS=Tree Wrap/Sun Scald • WW=Weak Wood • SL=Short Lived • SU=Suckers • RS= Re-seeds • TR=Transplants • LS=Leaf Scorch • EX=Exposure
OTHER: WN= Water Needs • LA= Limited Availability
DECIDUOUS ALPHA-BOTANIC
Botanical Name
Variety or Common Name
Plant Nomenclature from Manual of Woody Landscape
Plants by Michael A. Dirr 2009 edition.
6
Rating
Critical
A
A
B
B
A
A
A
A
Pyrus calleryana
Pyrus calleryana
Pyrus calleryana
Pyrus calleryana
Pyrus ussuriensis
European Birdcherry
European Birdcherry Summer Glow®
Peach - Elberta, Polly
Peach - Reliance
Plum - Santa Rosa
Plum - Stanley
Plum - Superior
Plum - Toka
Common Chokecherry - 'Canada Red',
'Schubert'
Plum - Des Fontaines
Wafer ash, Hoptree
Pear
Pear - 'Bartlett', 'Early Gold', 'Golden Spice',
'Luscious', 'Parker'
Pear - 'Summercrisp'
Callery - 'Bradford'
Callery - 'Aristocrat', 'Chanticleer',
'Cleveland Select'
Callery - 'Autumn Blaze'
Callery - 'Capital'
Callery - 'Redspire'
Ussurian - 'Prairie Gem', 'Burgandy'
Pyrus ussuriensis
Ussarian - 'Mt. Frost'
B
Quercus
Quercus alba
Quercus bicolor
Quercus buckleyi
Quercus ellipsoidalis
Quercus gambelii
Oak
White
Swamp White
Texas Red
Northern Pin
Gambel
B
B
C
C
A
Quercus macrocarpa
Quercus muehlenbergii
Quercus robur
Quercus robur
Quercus robur
Bur
Chinkapin
English
English 'Columnaris'
English 'Skyrocket', 'Skymaster'
A
A
A
B
C
Quercus rubra
Red
B
Quercus shumardii
Quercus undulata
Quercus alba x robur
Quercus robur x bicolor
Robinia pseudoacacia
Salix
Salix alba
Salix alba
Salix amygdaloides
Shumard
Wavyleaf
Crimson Spire®
Regal Prince®
Black Locust - 'Purple Robe'
Willow
Niobe Weeping - 'Tristis'
Russian Golden - 'Vitellina'
Peachleaf
B
A
A
C
D
Prunus padus
Prunus padus
Prunus persica 'Elberta', 'Polly'
Prunus persica 'Reliance'
Prunus 'Santa Rosa'
Prunus 'Stanley'
Prunus 'Superior'
Prunus 'Toka'
Prunus virginiana
Prunus x fontanesiana
Ptelea trifoliata
Pyrus
KEY
Pyrus
Pyrus
Pyrus calleryana
Other
Cautionary
SC ST ID CH SA TS WW SL SU RS TR LS EX WN LA
x
x
x
x
B
C
A
x
B
B
D
x
x
x
x
x
x
x
A
B
A
A
B
B
B
B
Comments:
Cultural Factors
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
m
m
x m
x m
m
m
m
m
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Some breakage after storms
Some breakage after storms; red leaf form
Seldom sets fruit along the front range
Seldom sets fruit along the front range
Needs a cross pollinator
Self fruitful plum
Needs a cross pollinator
Needs a cross pollinator
l-m
m
l-m
Tree form suckers, best as shrub
x Zone 3 ornamental cherry; long lived for a Prunus
x Best as a multi-stem
l-m
l-m
l-m
x
Fireblight
l-m
l-m
l-m
l-m
l-m
x
More cold hardy then P.calleryana , fireblight
l-m
x
Fireblight
l-m
m
l
m
l
x
x
x
Develops chlorosis in alkaline soils
Develops chlorosis in alkaline soils
Many seed sources not predictably hardy
Develops chlorosis in alkaline soils
x
From northern seed source
l-m
l-m
l-m
l-m
l-m
x
x
Fireblight
x
m
Develops chlorosis in alkaline soils
l-m
l
l-m
l-m
l-m
From a northern source
h
h
l-m
Highly susceptible to borer damage
x
x
Aphids and cankers
Aphids and cankers
Aphids and cankers
Deciduous Alpha-Botanic
CRITICAL: SC=Soil Chemistry • ST=Soil Texture • ID=Insects & Diseases • CH= Cold Hardiness • SA=Salt Tolerance
CAUTIONARY: TS=Tree Wrap/Sun Scald • WW=Weak Wood • SL=Short Lived • SU=Suckers • RS= Re-seeds • TR=Transplants • LS=Leaf Scorch • EX=Exposure
OTHER: WN= Water Needs • LA= Limited Availability
DECIDUOUS ALPHA-BOTANIC
Botanical Name
Variety or Common Name
Plant Nomenclature from Manual of Woody Landscape
Plants by Michael A. Dirr 2009 edition.
Globe - 'Navajo'
Prairie Cascade
Japanese Pagodatree
Mountain-ash
Swedish Whitebeam
European
European - Cardinal Royal®
Oak Leaf
Syringa
Syringa pekinensis
Syringa reticulata
Tilia
Tilia americana
Tilia cordata
Tilia tomentosa
Tilia cordata x mongolica
Tilia x flavescens
Tilia x euchlora
Ulmus
Ulmus americana
Ulmus americana
Ulmus davidiana
Ulmus propinqua
Ulmus wilsoniana
Ulmus japonica x U. pumila
Ulmus japonica x U. wilsoniana
Ulmus minor x U. parvifolia
Ulmus 'Urban' x U. wilsoniana
Ulmus wilsoniana x U. pumila x U.
minor
Xanthoceras sorbifolium
Zelkova serrata
Zelkova serrata
Zelkova serrata
Zelkova serrata
Lilac
Peking - 'Summer Charm'
Japanese -'Ivory Silk'
Linden
American- 'Legend', 'American Sentry'
Littleleaf - Greenspire®
Silver - 'Sterling Silver'
'Harvest Gold'
'Glenleven'
'Redmond'
Elm
American - 'Princeton'
American - 'Valley Forge' 'Triumph'
David
'Emerald Sunshine'
'Prospector'
'Vanguard'
'Accolade' 'Triumph'
'Frontier'
'Patriot'
KEY
Salix matsudana
Salix x 'Prairie Cascade'
Sophora japonica
Sorbus
Sorbus intermedia
Sorbus aucuparia
Sorbus aucuparia
Sorbus x hybrida
'Commendation'
Yellowhorn, Clear Creek®
Japanese Zelkova
'Musashino'
'Green Vase'
'Village Green'
7
Rating
Comments:
Cultural Factors
Critical
Other
Cautionary
SC ST ID CH SA TS WW SL SU RS TR LS EX WN LA
h
h
x m
x
m
m
m
m
x
x
x
x
C
A
l-m
l-m
x
A
A
A
C
A
A
m
m
m
m
m
m
D
B
B
C
B
B
C
C
C
C
C
C
C
C
C
C
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
C
C
C
C
C
x
x
x
Aphids and cankers
Aphids and cankers
x
x
x
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
l-m
x
x
x
x
x
x
x
x
l-m
l-m
x
x
Fireblight
Fireblight
Not tolerant of road salts
Not tolerant of road salts
Not tolerant of road salts
Not tolerant of road salts
Not tolerant of road salts
Some susceptibility to DED, scale
Good DED resistance, scale
Holds leaves late
Holds leaves late
Not best growth habit
Subject to early fall frost
Narrower growth habit
Early frequent pruning needed when young
m
m
m
Deciduous Alpha-Botanic
CRITICAL: SC=Soil Chemistry • ST=Soil Texture • ID=Insects & Diseases • CH= Cold Hardiness • SA=Salt Tolerance
CAUTIONARY: TS=Tree Wrap/Sun Scald • WW=Weak Wood • SL=Short Lived • SU=Suckers • RS= Re-seeds • TR=Transplants • LS=Leaf Scorch • EX=Exposure
OTHER: WN= Water Needs • LA= Limited Availability
EVERGREEN ALPHA-BOTANIC
Botanical Name
8
Variety or Common Name Rating
Plant Nomenclature from Manual of Woody Landscape
Plants by Michael A. Dirr 2009 edition.
Comments:
Cultural Factors
Critical
Cautionary
Other
SC CH ID ST SA TS WW SL SU RS TR LS EX WN LA
Abies concolor
White Fir
B
Cedrus libani
Juniperus
Cedar of Lebanon
C
Juniper
x
Juniperus chinensis
Chinese - 'Blue Point', 'Spartan',
‘Spearmint’
B
Chinese - 'Hetzi Columnaris'
A
x
One-Seed
A
Utah
A
Rocky Mountain
Rocky Mountain - 'Welchii', 'Gray
Gleam', ' Cologreen', 'Sky Rocket',
'Wichita Blue', 'Moonglow', 'Medora'
Eastern Red Cedar - 'Hillspire',
‘Idyllwild,’ 'Blue Arrow', 'Taylor'
A
Eastern Red - 'Manhattan Blue'
A
x
l-m
x
l-m
Juniperus chinensis
Juniperus monosperma
Juniperus osteosperma
Juniperus scopulorum
Juniperus scopulorum
Juniperus virginiana
European Larch
A
B
Metasequoia glyptostroboides
Dawn Redwood
C
Picea
Spruce
Picea abies
Norway - 'Cupressina'
B
Picea glauca
Black Hills 'Densata'
A
Picea omorika
Serbian
B
Picea pungens
A
Picea pungens glauca
Colorado
Colorado Blue - 'Baby Blue Eyes',
'Bakeri', 'Fastigiata', 'Fat Albert',
Hoopsii, 'Colorado Weeping' ,'Sester's
Dwarf'
Pinus
Pine
Pinus aristata
Bristlecone(foxtail)
B
Pinus bungeana
Pinus cembra
Lacebark
C
C
Swiss Stone Pine
Lodgepole
Pinyon
x
x
m
x
x
l-m
l-m
l
l
x
x
x
x
m-h
Tussock moth in large trees
x
m-h
Possible IPS problem
m-h
x
l-m
x
l-m
m
Pinus heldreichii
C
Singleleaf Pinyon
x
m
Pinus monophylla
C
l
Pinus mugo
Pinus nigra
Austrian
A
A
Pinus nigra
Austrian - 'Arnold's Sentinel'
B
m
Pinus ponderosa
Ponderosa
Eastern White
B
l-m
x
x
x
Southwestern White
Scotch
B
Sequoiadendron giganteum
Taxodium distichum
Giant Sequoia - 'Hazel Smith'
C
x
C
x
KEY
Pitch borer, tip moth, Pine Beetle.
x
x
x
l-m
Pinus sylvestris
B
Chlorosis at lower elevations; susceptible to Mountain Pine Beetle
x
l-m
B
A
B
x
l-m
x
x
Green Giant
Slow growing
l-m
A
A
Thuga standishii x Thuja plicata
x
m-h
x
x
B
A
Thuga occidentalis
x
m-h
A
Baldcypress - 'Frio River'
Eastern Arborvitae - 'Emerald',
'Techny', 'Degroots Spire'
Will not take windy sites; needs a more protected area
m-h
A
Baldcypress
Will not take windy sites
x
x
Bosnian var. leucodermis
Bosnian var. leucodermis - 'Emerald
Arrow', 'Iseli Fastigiata'
Taxodium distichum
Needs a dry site.
m-h
x
Pinus heldreichii
Pinus strobus
Pinus strobiformis
Needs a dry site.
x
l
Limber
Mugo - ' Big Tuna','Tannenbaum'
x
x
l
Pinus flexilis
Pinus flexilis
'Vanderwolf's Pyramid'
Needs more moisture; needs well drained soil; chlorosis
x
m
A
Juniperus virginiana
Larix decidua
Pinus contorta
Pinus edulis
x
x
Evergreen Alpha-Botanic
x
Some Zimmerman Pine Moth
m
x
l-m
x
CRITICAL: SC=Soil Chemistry • ST=Soil Texture • ID=Insects & Diseases • CH= Cold Hardiness • SA=Salt Tolerance
Mountain Pine Beetle
Develops chlorosis in alkaline soils; will not take windy sites
l-m
m
x
m
x
m-h
m-h
x
m-h
x
m-h
Mountain Pine Beetle
x
x
More protected area
x
More protected area
CAUTIONARY: TS=Tree Wrap/Sun Scald • WW=Weak Wood • SL=Short Lived • SU=Suckers • RS= Re-seeds • TR=Transplants • LS=Leaf Scorch • EX=Exposure
OTHER: WN= Water Needs • LA= Limited Availability