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Landscaping Species Guide
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HOW TO USE THIS GUIDE
1. This guide is intended to provide Glenwood Springs residents and our neighboring communities with an overview of the species that are able to survive the environmental conditions of our ecoregion (21f) or that are adaptive species from nearby ecoregions. 2. Not all species are recommended for your site. Please practice planting the right species in the right place. 3. Please make note of the colored columns on the left, which depict species suitability for streets and sidewalks, drought tolerant conditions, and indicate whether or not the species is native, evergreen, and/or a groundcover.
DETAILS KEY
I = Intolerant
L = Low
M = Moderate
R = Rapid
S = Slow
T = Tolerant
U = Unknown
HYRDOZONE KEY
1... (Drought Tolerant)... Requires very little water
2... (Moderately Drought Tolerant)... Requires little water
3... (Low Drought Tolerance)... Requires moderate water
4... (No Drought Tolerance)... Requires regular water
FLAMMABILITY KEY
8 - 10....Low Flammability
4 - 7......Moderately Moderate Flammability
0 - 3......High Flammability
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Streets & SidewalksDrought Tolerant ***Colorado Native*Near Native*EvergreenGroundcoverShade TreeHydrozoneGroupBotanic NameCommon NameAverage Mature Height Average Mature SpreadShade ToleranceSalt ToleranceFire Tolerance**Growth Rate
Bloom SeasonInflorescence or Leaf Color Fruit & SeedWildlife ValueOther Notes
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xxxxx1CactiEscobaria spp.Pincushion cactus4”4”I MMSSummerPink, white,Yellow, orangePink, RedNectar & pollen for bees.Many of these cacti are native to our region and vary depending on species.
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xxxx2ForbsAchillea millefoliumCommon Yarrow2'3'MLTMSpringwhiteInsignificantNectar & pollen for bee, butterflyConsidered a desirable member of natural communities, but its creeping habit and ability to establish seedling can make it difficult to manage in landscaped areas.
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xxxxx2ForbsCallirhoe involucrataWine Cups 4”x10”I LLMSpringSummermagentaInsignificantGood for pollinators.
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xxxx1ForbsCampanula rotundifoliaHarebell, bluebell12”6”MSummerLavender/blueInsignificantnectar & pollen for bee, butterflyThe characteristics of this perennial vary depending on habitat conditions.
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xxxx1ForbsDalea purpureaPurple Prairie Clover24”18”I SummerpurpleInsignificantGood pollinator plant (special value for native bees) and deer resistant.Cone like flower heads. Can be used as a natural lawn replacement.
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xxxxx1ForbsErigeron divergensSpreading Daisy, Spreading Fleabane2”6" - 24"I March - NovemberWhite, pink, or lavenderInsignificantSupports biologival contgrol processes. Can reach two feet tall in some conditions. Will stay shorter in xeric conditions.
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xxxxxx1ForbsEriogonum umbellatumSulfer Flower Buckwheat14"24"I TLSSummerYellowInsignificantGood for pollinators, attracts birds, and deer resistant.Check variety. It may be sold in small clump form with flowers to 10 centimeters tall, or as a sprawling shrub approaching two meters in height.
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xxxx2ForbsGaillardia aristataBlanket Flower12”12”I TLMSummerFallYellow/redInsignificantGood for pollinators.Reseeds readily and is easy to grow; good drainage is the only requirement. Rich soils will produce large, floppy plants with few flowers. Commonly used in roadside & meadow plantings.
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xxxx1ForbsHelianthus pumilusBush Flower, Little Sunflower20”36"I MTMSummer - FallYellowInsignificantGood pollinator plant (special value for native bees).Grows well in many different habitats.
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xxxx1ForbsLiatris punctataBlazing Star24”12”I ITMSummer - FallPink/purpleInsignificantGood pollinator plant (special value for native bees and bumble bees).Very eye catching and brightly colored.
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xxxx2ForbsLinum lewisiiLewis Flax18”12”I LLMSpring - SummerBlueInsignificantGood pollinator plant (special value for native bees and bumble bees), nectar for hummingbird.Tolerates saline and drought conditions very well.
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xxxxx1GrassAchnatherum hymenoidesIndian Rice Grass24”12”I LTMSummerTanUnimportant, brownSeed for birds; host plant for larval skipper.Native habitat is juniper ponderosa pine forests, and is commonly used for erosion control.
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xxxxx2GrassBouteloua curtipendulaSideoats Grama24”12”I LLSummerGreen/yellowSeedSeed for birds.Dakota pinnacle' is most winter hardy. Sod forming.
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xxxxx1GrassBouteloua gracilisBlue Grama18”12”I MTRSummerBlue greenSeedImportant forage for mule deer, elk, pronghorn, and bighorn sheep.Bunch grass, great partner to many native Colorado species. Tolerant of alkaline soils. Deep roots. Can be used for high-water use turf repplacement.
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xxxxx1GrassBuchloë dactyloidesBuffalograss10"12"I UUMSummerBlue greenSeedSeed for birds and small mammals.Can be used for high-water use turf replacement, but may not be good for heavy traffic areas.
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xxxxx2GrassElymus lanceolatusStreambank wheatgrass3'MRSummerBlue greenSeedPalatable to livestock and wildife. Preferred by elk, sheep, deer, and antelope.Sod forming, similar to western wheatgrass but not as aggressive. Good for, but not restricted to riparian sites.
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xxxxx2GrassKoeleria macrantha Prairy junegrass24"24"MMSummerLight green to blueSeedSeed for birds and small mammals, palatable to bighorned sheep, mountain goats, and other ungulates.Can be used ornamentally or as low-input turfgrass.
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xxxxxx1ShrubBerberis repens Creeping Barberry12”TLTSummerYellowInsignificantnectar & pollen for bee, butterflySpreading, can be used as groundcover
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xxx3ShrubBetula occidentalisWestern River Birch30'25'MITMMid SpringYellowInsignificantForage for mule deer, moose; cover for various wildlife, important habitat for birds.Cinnamonbrown bark, multistemmed, yellow fall foliage. Good for use in rain garden, or planted along a waterway.
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xxxx2ShrubBuddleia alternifolia Fountainleaf butterfly brush, alternateleaf butterfly brush10"8"MMMid SpringVioletInsignificantPollinator friendly, good wildlife forage.Arching form, silvergray foliage, fine texture, flowers on old wood, attracts butterflies, extremely hardy. Great for hedging.
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xxxx1ShrubCaryopteris x clandonensisSpirea, Blue Mist or Dark Night4"4"MMJul - SepBlueviolet to purple Tan to brown small fruitsDeer resistant. Attracts birds, bees, and hummingbirds.Mounded shrub with dark glossy foliage, upright branches. Needs Good drainage. Great for windy areas and dry sites.
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xxxx1ShrubEricameria nauseosa Rubber Rabbitbrush4’3’I FallYellowNoseed for birds; nectar & pollen for bee, butterfly
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xxxx1ShrubFallugia paradoxaApache Plume5’5’I MLSummerwhite, pink, purpleNonectar & pollen for beeSmall leaves, finetextured, whitish stems, rosecolored featherytailed seeds, some suckering
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xxxx1ShrubFendlera rupicolaCliff fendlerbush5'5'I IIJunWhiteNoGlossy foliage, new reddish bark turns gray with age, upright irregular growth, fragrant flowers
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xxxx1ShrubHolodiscus dumosusRock spirea4'4'I IMMay - JunWhiteNoUpright spreading habit, finetextured foliage turns red in fall, rust colored seedheads in fall
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xxxx1TreeAbies concolorWhite Fir50'30'MIMSLate SpringRedUnimportant, brownDeer, elk, bear, and mountain beaver habitat. Many bird species, including bald eagle, northern spotted owl, brown creeper, and redbreasted nuthatches are associated with white fir habitat types. Specimen tree, exceptional foliage. Underutilized.
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xxx2TreeAcer glabrumRocky Mountain Maple20'15'MITRLate SpringgreenWinged SamarasRegular source of cover for wildlife.Multistemmed, fragrant flowers, orange and red fall foliage. Longlived and shade tolerant. Can b very shrubby.
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xxxx2TreeAcer grandidentatumBigtooth Maple50'25'MLLSpringwhiteDouble SamarasFood and cover for birds, and browsed by larger ulgulates.Shade tolerant, blazing autumn foliage, highly adaptable.
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xxxx1TreeAcer negundo "sensation'Sensation Box Elder30 - 50'25 - 40'TMLRSummerYellow/GreenWinged SamarasSeeds are winter forage for birds and small mammals, deer browse
young plants.
Red expanding leaves in spring, brilliant orange and red color in the fall. Male selections do not attract box elder bugs. May produce many sprouts.
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xxx4TreeBetula papyriferaPaper Birch50'25'I MTMMid SpringYellowNoYoung stands provide cover for deer and moose and cavitynesting birds including woodpeckers, chickadees, nuthatches, and swalLow Tolerances.Specimen tree w/ gleaming white peeling bark, golden fall foliage. Paper birch is useful for longterm revegetation and soil stabilization
of severely disturbed sites. Only reccommended for riparian plantings--not for yard use.
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xxxx2TreeCatalpa speciosaNorthern Catalpa50'40'I LIMEarly SummerWhiteBrown PodsSpecial value to honeybees.Excellent shade tree. Fragrant white flowers, large heart shape leaves. Great for high elevations.
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xxxxx1TreeCeltis occidentalisNorthern Hackberry50'50'TLLRMid SpringGreenYes, BrownForage and cover for deer, small wildlife and birds.Yellow fall foliage, fruit a purplyred, slow grower, long lived.
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xxx2TreeCrataegus douglassiiDouglas Hawthorn25'25'I LApr – MayWhiteBlackImportant forage for grouse, ungulates, and waterfowl.Showy white flowers, orangered fall foliage. Large thorns.
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xxxx1TreeGleditsia triacanthos inermis 'Imperial'Imperial Honeylocust30'40'I MMMLate springYellowYes, GreenForage and cover for a variety of mammals and birds.The City is requesting a reduction in the planting of new honeylocust trees due to a high concentration of this species. Fine textured foliage with soft yellow fall color. High urban environment adaptability.
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xxxx1TreeGleditsia triacanthos inermis 'Shademaster'Shademaster Honeylocust40'40'I MMRLate springYellowGreenForage for larger mammals.The City is requesting a reduction in the planting of new honeylocust trees due to a high concentration of this species. Fine textured foliage with soft yellow fall color. High urban environment adaptability.
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xxxx1TreeGleditsia triacanthos inermis 'Skyline'Skyline Honeylocust40'40'I MMRLate springYellowGreenForage for larger mammals.The City is requesting a reduction in the planting of new honeylocust trees due to a high concentration of this species. Seedless. High urban environment adaptability.
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xxxx1TreeJuniperus monospermaOne Seed Juniper30'12'I IISInconspicuousInconspicuousConeForage and cover.Upright or rounded habits, scalelike leaves, highly drought tolerant and high native habitat value. Cones look like berries.
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xxxx1TreeJuniperus osteospermaUtah Juniper20'15'I LLSInconspicuousInconspicuousBlueForage and cover.Small tree, foliage & fruit important wildlife forage
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xxxx1TreeJuniperus scopulorumRocky Mountain Juniper20'15'I MLSInconspicuousInconspicuousBlueForage and cover.Pyramidal to upright, exfoliating bark, Tolerant habitat value
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xxxx2TreePicea pungensColorado Blue Spruce80'30'MLLSInconspicuousInconspicuousConesForage and cover for birds.Green to silvery blue, pyramidal, susceptible to bark beetles.
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xxxx1CactiOpuntia macrorhizaPrickly Pear5”18”I MMSSummerYellowPink, RedNectar & pollen for bees.Many of these cacti are native to our region and vary depending on species.
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xxxx1CactiYucca glaucaPlains Yucca2’4'I MIMLate Spring, SummerWhite flowersHost plant for pronuba moth, habitat and forage for many small mammals, birds, and reptiles.Very stout xeric plant. Flower stalks are 4-5' tall.
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xxxx2ForbsAntennaria parvifoliaSmall leaf Pussytoes 2”6”MLTRSpring SummerWhiteInsignificantAttracts and is larval host for painted lady butterfly. Silvery gray foliage.
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xxx2ForbsArtemisia frigidaFringed Sagebrush12”MMMMSummerWhiteInsignificantDeer, elk, pronghorn, bighorn sheep, and sagegrouse browse the foliage. Voles feed on roots and rhizomes. Pollen for bee; seed for birds.One the most widely distributed of all the species of Artemisia. It is found throughout the northern hemisphere from boreal regions near the Arctic Circle to the cool season grasslands of Asia and North America.
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xxx2ForbsArtemisia ludovicianaWhite Sagebrush18”18”I MTMEarly SpringYellowInsignificantDeer, elk, pronghorn, bighorn sheep, and sagegrouse browse the foliage. Voles feed on roots and rhizomes. Pollen for bee; seed for birds.Prefers dry areas with sandy or rocky soils, and is frequently found near oaks and conifers.
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xx3ForbsAsclepias speciosaShowy Milkweed30”12”I ITSummerPink, whiteInsignificantNectar & pollen for hummingbird, bee, butterfly; host plant for monarch larva.Root cuttings can be taken in fall or early spring. Seeds may be sown outside in late fall or the following spring.
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xxx1ForbsAsclepias tuberosaButterfly Millkweed18”18”I ITSummerOrangeInsignificantNectar & pollen for hummingbird, bee, butterfly; host plant for monarch larvaAttracts aphids; you can leave them for ladybugs, spray the insects and foliage with soapy water, or remove them by blasting the plant with a Tolerant pressure stream of water.
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xxxForbsCoreopsis tinctoriaPlains Coreopsis2.5'-3'2.5'-3'I SummerYellowLaso known as Tickseed or Lanceleaf Coreopsis.
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xxx1ForbsMentzelia decapetalaTen Petal Blazing Star28”18”I LLMSummerWhiteInsignificantGood pollinator plant (special value for native bees and bumble bees).Very eye catching and brightly colored.
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xxxx1ForbsMirabilis multifloraColorado Four O’Clock18”48”I LTRApril - SeptemberMagentaInsignificantNectar for hawk moth; nectar for hummingbird.Very vibrant colored tubular flowers. Good for erosion control. Can be mowed or cut low in late fall.
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xxx2ForbsMonarda fistulosaBee Balm, Wild Bergamot24”24”MIIMSummerPink, fushia, redInsignificantGood pollinator plant, nectar for hummingbird.Hardy pollinator plant, brilliant blooms and pleasantly fragrant. Prone to mildew in soils that aren't well aerated
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xxx1ForbsOenothera caespitosaWhite-tufted Evening Primrose6”12”I MMMSummerWhiteInsignificantNectar and host plant for hawk moth. Good pollinator plant (special value for native bees and bumble bees).Sweet scent and excellent xeric interest.
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xxxx3ForbsPaxistima canbyiMountain Lover12"4'TRSpring - SummerGreenInsignificantDeer resistant, attracts beneficial insects.Needs protection from winter sun and wind, great for shady spots under trees and peaking out of rock gardens. Grows well in alkaline soils.
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xxx1ForbsPenstemon secundiflorusSidebells Penstemon20”12”I MSpring - SummerLavender, pinkInsignificantGood pollinator plant (special value for native bees and bumble bees), nectar for hummingbird.Good rock garden plant, prefers sandy-loamy soils.
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xxx2ForbsPenstemon strictusRocky Mountain Penstemon30”24”MMSummerBlue/purpleInsignificantGood pollinator plant (special value for native bees and bumble bees), nectar for hummingbird.Tolerates moisture but can thrive in xeric conditions. Grows well with sagebrush and conifers.
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xxx2ForbsPenstemon virensBlue Mist Penstemon12”12”I MSpring - SummerBlue/purpleInsignificantGood pollinator plant (special value for native bees and bumble bees).Good for container and rock gardening. Grows well with sagebrush and conifers.
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xxx2ForbsRatibida columniferaPrairie Coneflower18”12”I LTMSummer - FallYellowInsignificantGood pollinator plant, nectar for hummingbird.There are many varieties that are suitible for xeric gardens.
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xxx2ForbsRudbeckia hirtaBlack-eyed Susan24”7”I IMRSummerYellowInsignificantGood pollinator plant, nectar for hummingbird.Blooms last longer with a bit of shade. Can be aggressive if in the right conditions.
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xx3ForbsSalvia azureaPitcher Sage36”36”I IMRSummerBlue/purpleInsignificantGood for pollinators (special value for native bees and bumble bees), deer resistant.Two-lipped flowers in spike like clusters.
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xx2ForbsSolidago altissimaRocky Mountain Goldenrod6" - 12"6" - 12"I ITRLate Spring, Wearly SummerYellowInsignificantGood for pollinators. Deer resistant.Performs well in many landscapes. Many other species of solidago are acceptable for our region. Please check exact cultivars/varieties for adaptability.
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xx2ForbsSolidago multtiradiataDwarf Goldenrod6" - 12"6" - 12"MMTRSummerYellowInsignificantGood for pollinators. Deer resistant.Many other species of solidago are acceptable for our region. Please check exact cultivars/varieties for adaptability.
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xx3ForbsSolidago nanaGiant Goldenrod5'MITRLate SummerYellowInsignificantGood for pollinators.This variety tolerates wet conditions but may also survive in drought conditions. Many other species of solidago are acceptable for our region. Please check exact cultivars/varieties for adaptability.
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xxx1ForbsSphaeralcea coccineaScarlet Globemallow10”10”I MMRSummerRed/orangeInsignificantPalatable for deer and pronghorn. Good pollinator plant (special value for native bees and bumble bees).Flowers have a green a yellow center creates a lovely contrast of color.
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xxx4ForbsVeronica americaAmerican SpeedwellTLate Spring, Early Summer, Mid-SummerLight purpleAttracts pollinators.Also known as American Brooklime. Good for use around water features or for riparian habitat restoration.
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xxxx1ForbsZinnia grandifloraPlains Zinnia4-8"12-15"MMTSummerYellowButterflies, moths, syrphid flys, beesHighly heat and drought tolerant. Complements rock gardens well.
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xxx3GrassPascopyrum smithiiWestern wheatgrass36"18"TUUMSummerSilver, blue, greenSeedSeed for birds and small mammals. Palatable to elk.Tolerates saline soils, flooding, and a fair amount of silt deposition. Very cold hardy.
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xxx1GrassSchizachyrium scopariumLittle Bluestem24"40"I IMRSummerBlue green, hints of redSeedSeed for birds; host plant for /skipper.Bunch grass that withstands many harsh environmental conditions. Good winter interest.
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xxxx1GrassSporobolus heterolepisPrairie Dropseed30"24"Forage for rabbits.Ornamental mounding grass. Can be cut to the ground in the spring.
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xx4ShrubAlnus incanaThin Leaf Alder15-40’15-40’MSpringPurple-red catkinsConeFood and cover for birds and small mammals.Fixes Nitrogen to soil, flood tolerant, high water use.
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xxx2ShrubAmelanchier alnifoliaSaskatoon Serviceberry4’-15’6’-8’MLTRMid SpringWhiteRed berryFood and cover for birds.
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xxx2ShrubAmelanchier canadensisShadblow Serviceberry25’-30’15’-20’MMid SpringWhite
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xxx1ShrubAmelanchier utahensisUtah Serviceberry12'12'IMid Spring, Late SpringWhite
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xxx1ShrubAmorpha canescensLeadplant3’-6’4'TLTMSummerPurpleInsignificantNectar & pollen for bee.Silvergray foliage, fine texture
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xxx1ShrubArctostaphylos uva-ursiKinnikinnick6”-12”15’MMid Spring, Late Spring, Early SummerInsignificant
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xxx1ShrubArtemisia canaSilver Sagebrush1’-3’3'MLTM
Summer, Fall
YellowInsignificantDeer, elk, pronghorn, bighorn sheep, and sagegrouse browse the foliage. Voles feed on roots and rhizomes. Pollen for bee; seed for birds.Stiff, upright branches, slender gray leaves, native of Colorado mountain meadows
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xxx1ShrubArtemisia filifoliaSand Sagebrush5'3'MLate Summer, Early Fall, Mid Fall, Late Fall, Early WinterInsignificant
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xxx2ShrubArtemisia tridentaBig Sagebrush Western Sagebrush2' - 6'2' - 6'MMTMAugSeptYellowYes, brownDeer, elk, pronghorn, bighorn sheep, and sagegrouse browse the foliage. Voles feed on roots and rhizomes. Pollen for bee; seed for birds.Silver, aromatic foliage; bark shreds with age, native. Check specific cultivars/varieties for differences in size and appearance.
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xxx1ShrubAtriplex canescensFour-winged Saltbush6’-12’3-6’TTLEarly Spring-Late FallInsignificantYes, four winged fruit on female plants,Important as wildlife cover and food plants. Fruitmammals, Fruitbirds, Nectarbees, Nectarinsects.Gray green leaves, upright spreading form, tolerates alkaline, salty, and dry soil. Can be difficult to eradicate, but is excellent for erosion control. Survives well on dry, rocky limestone soils
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xxx1ShrubCercocarpus intricatusLittleleaf Mountain Mahogany6'5'I MUMMid-SpringSilver green leaves, pale yellow inflorescenceRed or yellowExcellent habitat value and forage for wildlife. Can sometimes grow into more of a tree form. Nitrogen fixing.
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xxxx1ShrubCercocarpus ledifoliusCurl-leaf Mountain Mahogany20"12"MIMMApr – MayCreamy YellowInsignificantForage and cover for deer, pronghorn, small wildlife and birds.Large shrub or small upright tree, evergreen foliage, seeds with twisted, feathery tails; foothills native
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xxxx1ShrubCercocarpus montanusAlderleaf Mountain Mahogany8'6'IIMMApr – MayYellow GreenInsignificantForage and cover for deer, pronghorn, small wildlife and birds.Large shrub or small upright tree, evergreen foliage, seeds
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xxx1ShrubChrysothamnus nauseosusRubber Rabbitbrush4-6'4-6'MLate SummerYellow
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xxx1ShrubChrysothamnus nauseosus ssp. nauseosusDwarf Blue Rabbitbrush4'4'MFallYellow
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xxx1ShrubChrysothamnus spp.Rabbitbrush (multiple varieties/cultivars)6"6"I MIMAug SepYellowInsignificantForage and cover for deer, small wildlife and birds.Some varieties/cultivars may not be fully native, but are likely well adapted to our region.
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xxx1ShrubChrysothamnus viscidiflorusYellow Rabbitbrush5'5'MMIMLate Summer, Early Fall, Mid FallYellowInsignificantForage and cover for deer, small wildlife and birds.Open, rounded form, green to white stems, silvery green leaves, reseeds. Size greatly depends on variety.
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xxx2ShrubCornus sericeaRedosier / Red Twig Dogwood6-8'6-8'MSpring to SummerWhite
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xxx2ShrubCrataegus erythropodaShiny-leaved Hawthorn10-20'8-15'ISpringWhite
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xxx2ShrubEphedra americanaJointfir4'3'MLate Spring, Early SummerLight Yellow
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xxx1ShrubEphedra viridisMormon Tea4’-6’4’-6’MEarly SpringInsignificant
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xxx1ShrubForestiera neomexicanaNew Mexico Privet8’-12’6’-8’MMid Spring – Late SpringInsignificant
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xxx1ShrubMahonia aquifoliumCompact Oregon Grape Holly6’6’MSpringYellow
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xxxxx1ShrubMahonia repensOregon Grape, Creeping Mahonia, Creeping Grape Holly1’-2’3’TMN/AYellow; Blue/Green/PurpleDark blue berriesYear-round ground cover.Creeping shrub with holly-like leaves that can sometimes turn purple in the winter. Good for erosion control. Bright yellow flowers.
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xxx1ShrubPhiladelphus lewisiiMock Orange7'6'MLate Spring, Early SummerWhite
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xxx1ShrubPhiladelphus microphyllusLittle-leaf Mockorange4’-6’4’-6’ILate Spring, Early SummerWhite
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xxx1ShrubPhysocarpus monogynusMountain Ninebark4'4'MSpringWhite
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xxx1ShrubPhysocarpus opulifoliusNinebark6'4'MLate Spring, Early SummerLight Pink,
White