Quaking Aspen

Swedish Columnar Aspen

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Quaking Aspen

CHERRY, CANADA RED (Prunus virginiana ‘Canada Red’) Ht 20-25 ft, Spd. 18-20 ft. Full sun to part shade. Low to moderate water needs.  New growth is bright green, turning to burgundy-red as the leaves mature.  White flowers in 3”-6” long drooping racemes appear mid-spring followed by small ¼” dark purple fruit.  Fast growing plant that can provide a quick screen and attracts birds.  Easiest to use as a shrub unless suckers are maintained while the tree is young.

CHERRY, SUMMERGLOW (Prunus padus )  Ht 15-25 ft, Spd 20-30 ft.  Full sun to part shade.  Low to moderate water needs.  A medium sized ornamental tree usually occurring as a broad multi-stem but may also be a low branching single stem.  Closely related to chokecherry.  Fragrant white flowers in loose drooping racemes ½” across to 6” long appear in late April to early May.  A black drupe fruit ripens in Late July to early August.  Summer foliage is very similar the Canada Red Cherry. 

CHOKECHERRY, AMUR  (Prunus maackii) Ht 25-30 ft, Spd 25-30 ft.  Full sun to part shade.  Low to moderate water needs.  A small tree producing fragrant white flowers in loose drooping racemes.  A small black drupe fruit ripens late summer and is usually eaten by the birds.  Moderately pyramidal when young maturing to a rounded crown.  The bark ranges in color from polished amber to dark red-brown, with a striking metallic sheen.  The bark is somewhat exfoliating but varies from tree to tree.  An attractive alternate for aspen groves.  Prefers well-drained soils. 

CISTENA, PRUNUS TREE FORM (Prunus x cistena) Ht 8 ft, Spd 6 ft. Full sun to part shade. Low to moderate water needs.  Can be a large multi-stemmed shrub.  Denser and more compact than Newport Plum.  Leaves are a brighter purple.  An excellent dwarf accent tree.  This is also available in a shrub form.

Canada Red Cherry Summerglow Cherry Amur Chokecherry Big Cis Prunus Cistena Tree Form . Canada Red Cherry

COTTONWOOD, HIGHLAND COTTONLESS (Populus acu. x sargentii ‘Higland’)  Ht 45-50 ft, Spd 20-30 ft.  Full sun to part shade.  Low to moderate water needs.  An upright growing disease and pest resistant cottonwood well suited to sites with limited space.  Upright oval habit.  Introduced by Highland Nursery in Greeley.  The original selection was made from the Cheyenne Research Station.  A hardy substitute for the Lanceleaf Cottonwood.   

COTTONWOOD, LANCELEAF COTTONLESS (Polulus x acuminate)  Ht. 40-60 ft., spd. 35-50 ft.  Full sun. Moderate water needs.  Native tree with upright rounded crown.  Glossy medium green leaves are intermediate in size between Plains Cottonwood and Narrowleaf Cottonwood.  Fast growing and hardy. 

COTTONWOOD, NARROWLEAF COTTONLESS (Populus x angustifolia)  Ht. 50-60 ft., spd. 35-45 ft.  Full sun to part shade.  Moderate water needs.  Fast growing native cottonwood with ascending branches that form a pyramidal crown.  The narrow, willow-like leaves are light green in summer turning golden yellow in fall.  It will sucker to form groves, but suckers and be pruned for a single stemmed tree.  Will do well over 8000’ elevation.

COTTONWOOD, NOR’EASTER COTTONLESS (Populus x canadensis ‘Noreaster’) Ht 50-75 ft, Spd 40-45 ft.  Full sun to part shade.  Moderate water needs.  A broad-leafed cottonwood with an upright habit and great branching even when young.  Nor’easter is a sterile female clone that has neither cotton nor pollen and has shown better disease resistance than other clones.  This tree is the fastest growing of all the trees we produce.  You can almost see it grow!

COTTONWOOD, SIOUXLAND COTTONLESS  (Populus deltoides ‘Siousland’)  Ht 70-90 ft, Spd 35-45 ft.  Full sun to part shade.  Moderate water needs. Cottonwood with large, dark green, rust-resistant leaves.  Fast growing oval headed tree that spreads with maturity.  Adaptable. 

COTTONWOOD, STRAIGHT PLAINS COTTONLESS  (Populus sargentii ‘Jeronimus’) Ht 70-80 ft, Spd 40-50 ft.  Full sun to part shade.  Moderate water needs.  This tree was selected for its straight growth habit atypical of the species.  Fast-growing native selections with a broad oval head.  Requires ample room for growth. 

Highland Cottonless Cottonwood Lancleaf Cottonless Cottonwood Narrowleaf Cottonless Cottonwood Nor'Easter Cottonless Cottonwood Straight Plains Cottonless Cottonwood . Highland Cottonless Cottonwood

CRAB, ADAMS  (Malus ‘adams’) Ht 20-25 ft, Spd 20-25 ft. Full sun to part shade.  Low to moderate water needs. A larger densely rounded crabapple.  New foliage has a reddish tint turning to dark green during the summer.  Single dark pink flowers appear in May.  The attractive fruit is persistent.  Showy orange-red fall color.  Rated highly for disease resistance.

CRAB, BECHTEL  (Malus ioensis ‘Plena’) Ht 20-25 ft, Spd 20 ft. Full sun to part shade.  Low to moderate water needs. A small vase shaped tree. Seldom bares fruit. Tolerates a variety of soils, and more tolerant of wet soils than other fruit trees.

CRAB, BRANDYWINE (Malus ‘Brandywine’) Ht 20-30 ft, Spd 20-25 ft. Full sun to part shade.  Moderate water needs. Double pink flowers, Vigorous, upright, spreading habit.  Strong branch development stands up well in snow.  Large, green leaves with purplish tints. Fragrant blossoms are followed by 1 ½” yellow-green apples which can make good jelly.  Excellent resistance to fire blight.  Leaves are burgundy in the fall.

CRAB, CENTURION  (Malus ‘centurion’) Ht 15 ft, Spd 12-15 ft.  Full sun to part shade.  Low to moderate water needs.  Red flowers.   Centurion crabapple has red buds that open to red flowers. The fruit is glossy cherry red and 5/8" in diameter. It has upright growth habit that becomes more oval with age.

CRAB, CORAL BURST (Malus ‘Coralcole’} Ht. 10-15ft., spd. 10-15ft.  Full sun to part shade.  Moderate water needs.   Double pink flowers.  A small, uniform growing globe usually grafted to a 3’ standard.  Pruning is seldom needed.  Dark green leaves are smaller than the species.  Ruby-red flower buds open to semi-double pink flowers.  Excellent resistance to fire blight. 

CRAB, DOLGO (Malus ‘Dolgo’) Ht. 25-35ft., spd. 20-30ft.  Full sun to part shade.  Low to moderate water needs.   White flowers.  Upright spreading form with green foliage and golden yellow bark.  Bears 1 ½” crimson fruit which has excellent flavor and makes good jelly.  Extreme hardiness, fast growth, good fruit flavor, and resistance to fire blight make this a popular crab.   Jerry’s (dad) personal favorite.

CRAB, GOLDEN RAINDROP (Malus ‘golden raindrops ‘)  Ht. 20 ft. spd. 15 ft. Full sun to part shade.  Low to moderate water needs. White flowers.  Perhaps the only crab that could be described as having a delicate appearance. The fine textured foliage is deeply cut. The form is elegant, with slender limbs spreading horizontally from upright branches. The golden yellow fruit is truly tiny.

CRAB, INDIAN MAGIC (Malus ‘Indian Magic’) Ht. 15’, spd. 15ft.  Full sun to part shade.  Low to moderate water needs.   Bright red elongated fruit is of unusual shape and makes this tree beautiful in fall.  Deep pink flowers with dark green foliage.  Fruit is persistent.

CRAB, INDIAN SUMMER (Malus ‘Indian Summer”) Ht. 15-20ft., spd. 15-20ft. Full sun to part shade.  Moderate water needs.  Rose red flowers.  Attractive yellow to orange fall color and the bright red 5/8” fruit which persist through the winter make this a tree for all seasons.

CRAB, PRAIRIEFIRE (Malus ‘Prairiefire’)  Ht. 20 ft., Spd. 20 ft.  Full sun to part shade.  Low to moderate water needs. Excellent disease resistance with purple-red leaves turning green with a red cast.  Small, dark red-purple, persistent fruit follow.  Beautiful pink flowers.

CRAB, PROFUSION (Malus ‘Profusion’)  Ht. 15-20 ft., spd. 15-20 ft.  Full sun.  Low to moderate water needs. This crabapple is noted for its abundant single pink flowers.  The new foliage emerges purple and ages to bronze green.  The maroon ½” fruits are persistent.  Its slender, ascending branches give ‘Profusion’ an upright rounded form.  CSU’s crabapple trials indicate that this crab has good fire blight resistance. 

CRAB. RADIANT  (Malus ‘Radiant’ )  Ht. 20-30 ft., Spd. 20-30 ft.  Full sun.  Moderate water needs.  ‘Radiant’ has a compact rounded form.  Bright red fruit follows its deep pink flowers to 1/5”, which develops color in midsummer and is not persistent.  The bark color is an attractive reddish-orange and shows itself to advantage on the well-developed strong branches.  It continues to be one of the better trees for Front Range community.

CRAB, ROBINSON (Malus ‘Robinson’) ht. 20-25ft., spd. 20-25ft. Full sun to part shade.  Moderate water needs.  Deep pink flowers. This upright crab spreads with age.  Leaves are bronze-green with good fall color.  The buds are a bright crimson and flowers are followed by dark glossy red 3/8” fruit.  A plus for this tree is it’s good to excellent disease resistance for all enemies of the crabapple family: scab, fire blight, rust, and mildew.

CRAB, ROYALTY  (Malus ‘Royalty’)  Ht. 15 ft., Spd. 15 ft.  Full sun.  Moderate water needs. Lovely purplish leaves and red flowers. Excellent for foliage contrast 

CRAB, SARGENT TINA (Malus ‘sargentii’)  Ht. 6-8 ft. spd. 10-12 ft.  Full sun to part shade.  Moderate water needs.  White flower.  A dwarf crabapple with horizontal branching, becoming more broad than tall.  Great accent for small courtyards or patios. Red fruit is persistent.

CRAB, SNOWDRIFT  (Malus ‘Snowdrift’)  Ht. 20 ft., spd. 20 ft.  Full sun to part shade. Low to moderate water needs.  One of the most popular crabs.  The crown is very uniform and symmetrical, making it one of the more formal looking crabs.  Green, glossy foliage with white flowers followed by 3/8” orange, persistent fruit.

CRAB, SPRING SNOW (Malus ‘Spring Snow’) Ht. 20-25ft., spd. 15-20ft. Full sun to part shade.  Moderate water needs. White flowers. ‘Spring Snow’ is characterized by a perfect teardrop shaped head that stands full and erect without pruning, when young, and matures to a rounded form.  A sport from ‘Dolgo’ with medium green foliage and yellow bark color, ‘Spring Snow’s’ main claim is that it bears no fruit.  Disease resistance is not as good as some other crabs, but no others are fruitless.

CRAB, THUNDERCHILD (Malus ‘Thunderchild’) Ht. 15-20ft., spd. 15-20ft.  Full sun to part shade.  Moderate water needs.  Light pink flowers.  Upright, spreading tree with deep purple leaves throughout summer that turn red in fall.  The pink blossoms are followed by ½” dark red fruit.  Excellent resistance to fire blight should make this a tree worth considering for those who desire purple leafed accent plants.

Adams Crab Bechtel Crab Centurion Crab Coral Burst Crab Dolgo Crab Indian Magic Crab Indian Summer Crab Prairiefire Crab Profusion Crab Radiant Crabapple Robinson Crab Royalty Crab Sargent Tina Crab Spring Snow Crab Thunderchild Crab . Adams Crab

ELM, ACCOLADE (Ulmus japonica x wilsoniana ‘Morton’)  Ht. 70 ft., spd. 60 ft.  Full sun to part shade.  Low to moderate water needs.  Arching limbs and a graceful vase shape characterize this outstanding hybrid elm.  Glossy dark green foliage changes to yellow in the fall and is resistant to elm leaf beetle feeding.  Growth habit gives good form in the nursery and an ultimate form like an American Elm.  It is showing good tolerance to Dutch Elm Disease   We are growing these and will have them in the next few years.

ELM, FRONTIER (Ulmus ‘Frontier’)  Ht 40 ft., spd. 30 ft.  Full sun to part shade.  Low to moderate water needs.  Features beautiful reddish-purple to burgundy fall color which is particularly long lasting.  It is showing good tolerance of Dutch Elm Disease.  We have been growing these for the last several years, and it is new for 2006.

GREEN VASE TREE (Zelkova serrata ‘Green Vase')  Ht. 50 ft, spd. 40 ft.  Full sun to part shade.  Low to moderate water needs.  Vase shape, with upright arching branches.  Finer textured green foliage produces dappled shade, then turns an orange fall color.

GOLDEN RAIN TREE  (Koelreuteria paniculata) Ht. 30-40 ft., spd. 30-40 ft.  Full sun.  Low to moderate water needs.  Large unique compound leaves that emerge red and mature to green.  Panicles, 12-15” long, of small, fragrant yellow flowers cover this tree in mid summer.  Papery pods shaped like Chinese lanterns appear in July and persist until November turning from green to yellow or red, then brown.  A distinctive ornamental tree.  A protected spot is best from planting.

HACKBERRY (Celtis occidentalis) Ht. 40-60 ft., spd. 30-60 ft.  Full sun to part shade.  Low water needs (xeric).   A large shade tree with an irregular habit when young, maturing to a stately rounded crown.  Foliage is light green.  Characteristic corky knobbed bark texture.  Very adaptable and tolerant of heavy soils.  Tiny reddish purple, sweet cherry-like berries that birds love ripen in late summer.  A Colorado native.

Accolade Elm Frontier Elm Golden Rain Tree Green Vase Tree Hackberry . Accolade Elm

HAWTHORN, CRIMSON CLOUD (Crataegus laevigata ‘Crimson Cloud’)  Ht. 15-18 ft. spd. 13-15 ft. Full sun to part shade.  Moderate water needs.  Remarkable clusters of crimson flowers with a white star in the center are surrounded by glossy green leaves.  Red fruit persists into winter.   

HAWTHORN, RUSSIAN (Crataegus ambigua)  Ht. 15-25 ft. spd. 20-25 ft., Full sun to part shade.  Low water needs (xeric).   Russian Hawthorn is a small, attractive, broad-headed tree with a moderate growth rate.  Its gnarled habit gives the tree an interesting silhouette.  Generously endowed with small 3/8” thorns.  Leaves are deeply lobed and medium green in summer.  Numerous corymbs of white flowers appear in late May.  In mid to late summer the whole tree begins to glow as the very abundant 1/5” cherry-like dark red fruits ripen.  They decorate the branches like ornaments for 2-3 weeks and are great for attracting birds.  It occurs as a single or multi-stemmed form.

HAWTHORN, THORNLESS COCKSPUR (Crataegus crusgalli inermis) Ht. 20-30 ft., spd. 20-25 ft., Full sun to part shade.  Low water needs (xeric)  Small, graceful tree with dark green, glossy foliage.  Clusters of white flowers bloom in late May followed by ½” bright red persistent fruit ripening in late September.  Fall color usually is a very fine orange-red.  Good resistance to leaf blight.  A vigorous and attractive small specimen tree.  Exfoliating bark.

HAWTHORN, TOBA (Crataegusx mordenensis ‘Toba’)  Ht. 15-20 ft. spd. 15-18 ft., Full sun to part shade. Low to moderate water needs.   Medium green summer leaves turn yellow to orange in the fall.  Clusters of double white flowers appear in May-June aging to a showy pale pink.  Medium-sized red fruit ripens in late summer.  The branches and trunk become “muscled” with age adding character to older specimens.   

HAWTHORN, WASHINGTON (Crataegus phaenopyrum)  Ht. 15-25 ft., spd. 12-20 ft.  Full sun.  Low to moderate water needs.  This is a small round headed tree.  Clusters of white flowers appear in May followed by glossy red ¼” fruits that persist into winter.  The light green foliage turns scarlet-orange in the fall.  Abundant ½”- 3/4” thorns are attractive.  Excellent for seasonal change.  Occurs as a single or multi-stemmed tree.  Good resistance to fire blight, but can develop chlorosis in alkaline soil.

HAWTHORN, WINTER KING (Crataegus viridis ‘Winter King’) Ht. 20’.  Spd 25 ft.  Full sun.   Low to moderate water needs.  Winter King is an attractive Hawthorn with silvery bark that contrast nicely with dark green, glossy leaves.  The strong, angular lines of its branching pattern give it a bold appearance in the winter.  White flowers in clusters followed by ¼” bright red fruit, then a yellow fall color.

Crimson Cloud Hawthron Russian Hawthorn Thronless Cockspur Hawthorn Toba Hawthorn Washington Hawthorn Winter King Hawthorn . Crimson Cloud Hawthron

HONEYLOCUST, IMPERIAL SEEDLESS (Gleditsia triacanthos inermis ‘Impcole’ )  Ht. 30-35 ft., Spd. 20-35 ft.  Full sun to part shade.   Low water needs (xeric).  A symmetrical, compact variety of thornless, seedless, honeylocust.  Bright green, pinnately compound foliage turns gold in the fall.  Imperial is more compact and uniform than other honeylocusts and works well in smaller landscapes or as a street tree.  Can sometimes produce a few pods.

HONEYLOCUST, SKYLINE SEEDLESS (Gleditsia triacanthos inermis ‘Skycole’)  Ht. 45-50 ft.,  spd.  35-40 ft.  Full sun to part shade.  Low water needs(xeric).  Pyramidal form with strong, sturdy trunk.  Branches are uniformly spaced.  Thornless and podless.  Yellow fall color.  Statuesque crown.

HONEYLOCUST, TRUESHADE/SHADEMASTER SEEDLESS  (Gleditsia triacanthos inermis ‘Trueshade’)  Ht. 45-50 ft., spd. 35-45 ft., Full sun to part shade.  Low water needs(xeric).  Pyramidal form with strong, sturdy trunk.  Branches are uniformly spaced.  Thornless and podless.  Yellow fall color.

KENTUCKY COFFEE TREE (Gymnocladus dioica)  Ht. 50-60 ft., spd. 40-50 ft.  Full Sun.  Low water needs (xeric).  A large shade tree with a narrow habit when young, maturing to an open broad spreading crown.  Pinnately-compounded leaves are blue-green in summer.  Fragrant white flower panicles up to 12” long, bloom on female trees followed by mahogany colored seed pods that persist through winter.  Male trees have 1” flowers, but no pods.  Deeply furrowed bark and stout branches make this tree picturesque in winter.  Superior drought tolerance.

LILAC TREE, IVORY SILK (Strubga reticulate ‘Ivory Silk’)  Ht 20-25 ft, Spd 15-20 ft.  Tolerates Full Sun.  Low to moderate water needs.  This is a selection of the Japanese Lilac tree that flowers at a younger age, but a more compact form.  Has the same glossy dark red-brown bark to cinnamon-brown exfoliating bark.  Produces beautiful upright panicles of fragrant, cream white flowers in early to mid-June.

LILAC TREE, JAPANESE  (Syringa reticulata)  Ht. 20-30 ft., spd. 15-20 ft.  Full sun.  Low to moderate water needs.  A prolific bearer of 10”-18” upright panicles of creamy white flowers in early to mid-June, making this the latest lilac to bloom.  Looks best when the lower branches are removed to form a small multi-stemmed tree.  Young branches have glossy dark red-brown to cinnamon-brown exfoliating bark.  Foliage is attractive, although if located in a sot exposed to spring winds, can become shredded and look poor all summer long.  An excellent, hardy, and unusual tree for streets, or wherever a good specimen tree is needed.

LILAC TREE, PEKING (Syringa pekeninsis)  Ht. 20-30 ft. spd. 15-20 ft., Full sun to part shade.   Low to moderate water needs.  A small shrubby tree lilac similar to Japanese Tree Lilac, but smaller leaves suffer less tatter.  Attractive bark is smooth glossy sienna brown, exfoliating on some trees.  Showy creamy white flowers are borne in 4-6” long upright panicles in early June.  Better in windy locations than the Japanese Tree Lilac.

Imperial Honeylocust Skyline Honeylocust Trueshade Honeylocust Kentucky Coffee Tree Ivory Silk Lilac Tree Japanese Lilac Tree Peking Lilac Tree . Imperial Honeylocust

LINDEN, CORINTHIAN  (Tila cordata ‘Corzam’)  Ht. 45 ft., spd. 15 ft.  Full sun part shade.  Low to moderate water needs.  This is the narrowest of the Linden cultivars.  The leaves are smaller, thicker, and deep green.  They give the tree a finer textured, more delicate appearance.  Dark green foliage with yellow fall color.

LINDEN, GLENLEVEN (Tila cordata ‘Glenleven’)  Ht. 45 ft, spd. 30  ft.  Full sun to part shade.  Low to moderate water needs.  Perhaps one of the most vigorous cordata.  More open and faster growing that some other Linden.  Will have a yellowish fall color.

LINDEN, GREENSPIRE (Tilia cordata “Greenspire’) Ht. 30-40 ft., spd. 30-35 ft.  Full to part sun.  Moderate water needs.  A dense, pyramidal shape and spicy, fragrant flowers in June to July make this a desirable tree.  An excellent lawn of street tree with cinnamon colored bark and dark green leaves that are smaller than the Tilia ‘Americana’  and therefore not as susceptible to wind damage.

LINDEN, REDMOND (Tilia americana ‘Redmond’ )   Ht. 40-60 ft., Spd. 25-30 ft. Full to part sun.  Moderate water needs.  A Linden selection with large, dark green leaves and attractive cherry brown bark, Fragrant, yellow flower clusters in June to July.  Needs good drainage and proper watering.   

LONDON PLANE TREE (Platanus acerifolia ‘Bloodgood’)  Ht. 60 ft., spd. 35 ft.  Full sun to part shade.  Low to moderate water needs.  This wide-spreading, large shade tree is tolerant of city conditions.  Foliage is yellowish green turning yellow in fall.  Bark is mottled and flaking, resembling dragon scales for a unique look.

Redmond Linden Corinthian Linden Greenspire Linden Glenleven Linden London Plane Tree . Redmond Linden

MAPLE, AMUR /GINNALA FLAME (Acer ginnala)  ht. 15-20 ft.,  spd. 15-20 ft.,  Full sun to part shade.  Low water needs(xeric)  Can be grown as either a single or multi-stemmed tree.  Creamy white flowers in spring, dense summer foliage turns glowing red-orange in fall.

MAPLE, AUTUMN BLAZE (Acer x fremanii ‘Jeffersred’)   ht. 40-50 ft.,  spd.  30-40 ft.,  Full sun to part shade.  Low to moderate water needs.  This cross between Silver Maple and Red Maple is one of the hardiest available.  Green foliage turning brilliant orange-red in fall.  Broad, oval head shape, branching better than Silver Maple.  Great tree for this area with good fall color.

MAPLE, AUTUMN FANTASY  (Acer x freemanii ‘DTR 102’)  Ht. 50ft., spd. 40ft.  Full sun to part shade. Low to moderate water needs.  A fast growing hybrid of Red and Silver maple.  Has consistently produced good red fall color.

MAPLE, BIGTOOTH  (Acer grandidentatum)  Ht. 30-40 ft., Spd. 20-25 ft.  Full sun to part shade.  Low water needs (xeric).  An outstanding slow-growing Rocky Mountain native.  Small tree or large shrub, with five-lobed dark green leaves turning shades of yellow, orange or red in the fall.  Tolerant of both dry and alkaline soils.

MAPLE, COLUMNAR NORWAY (Acer platanoides ‘Columnar’) ht.  40-45 ft.,  spd. 15-25 ft.,  Full sun.  Moderate water needs.  Straight growing tree with medium green leaves turning bright yellow in fall.  Ideal for narrow area.

MAPLE, DEBORAH NORWAY (Acer platanoides 'Deborah' )  ht. 40-45 ft., spd 40 ft. Full sun.  Moderate water needs. An improved Schwedler Maple with red leaves in the spring, turning to dark green for the summer. Leaves turn to a bronze color in the fall.

MAPLE, EMERALD LUSTRE NORWAY  (Acer platanoides ‘Emerald Luster’ )  ht. 50-60 ft. spd. 30-45 ft., Full sun to part shade.  Low to moderate water needs.  A Norway Maple selection with good branching habits and vigorous growth.  Dark green leaves turn a clear yellow for fall.

MAPLE, EMERALD QUEEN NORWAY (Acer platanoides ‘Emerald Queen’) ht.  40-60 ft.,  spd. 30-40 ft.  Full sun to part shade.  Moderate water needs.  Very attractive tree with uniform growth habit and dense branching.  Glossy, dark green foliage highlights this tree’s beauty.  Yellow in the fall.

MAPLE, FAIRVIEW NORWAY (Acer platanoides ‘Fairview’)  ht. 40-50 ft. spd. 30-40 ft. Full sun to part shade.  Low to moderate water needs.  A Norway Maple that has an upright oval shape.  The new growth is a deep red-purple which matures to bronze-green.  More upright in form than the similar cultivar ‘Schwedler’.

MAPLE, HEDGE (Acer campestre)  Ht. 25-30ft., spd. 25-30ft.  Full sun.  Low to moderate water needs.  Noted for its moderate size, ability to regenerate quickly, and neatness of habit.  The dark green summer leaves turn to clear yellow in the fall.  Older stems develop an interesting corky bark.  Tolerant of alkaline soils.

MAPLE, PARKWAY NORWAY (Acer platanoides ‘Columnarbroad’)  Ht. 40 ft., spd. 25 ft. Full sun.  Low to moderate water needs.  Oval shape with good central leader.  Due to its shape and branching, it has proven to be an ideal street tree along wide streets and boulevards.  Dark green foliage with yellow fall color.

MAPLE, ROCKY MOUNTAIN  (Acer glabrum)  Ht. 10-15 ft., spd 8-10 ft. Full sun to part shade.  Low to moderate water needs.  Rock Mountain native that can be grown as a finely shaped large shrub or small tree.  Handsome light gray bark and upright habit.  Light green leaves turning yellow in the fall.  Bright red buds add winter color.  Native habitat is moist slopes or along streams throughout the Rockies.

MAPLE, SENSATION (Acer negundo ‘Sensation))  ht. 40-50 ft.,  spd. 30-40 ft.  Full sun to part shade.  Low water needs(xeric and very adaptable).  Fast growing shade tree for extremely harsh sites.  Seedless male clone that does not attract the boxelder bug.  Controlled growth with improved branching structure.  One of the few trees that are tolerant of high alkaline soils and  it has a red-orange fall color.  We are producing more of these.  Give them a try.

MAPLE, STATE STREET™ (Acer mivabei ‘Morton’)  Ht 30-40 ft, Spd  20-30 ft.   Tolerates Full Sun.  Low to Moderate Water Needs.  Similar to the Hedge Maple with its attractive corky bark.  Its medium green five-lobed leaves turn yellow in fall.  It is considered to do well in moist well drained sights, but other reports show it doing well in clay loam soil.   Cold hardy to -30F.  

MAPLE, TATARIAN (Acer tataricum )  ht. 20-25 ft. spd. 18-20 ft. Full sun to part shade.  Low water needs (xeric).  An excellent small, single or multi stemmed tree.  This plant is striking in June when the winged seeds turn pink to brilliant red.  Fall color varies from yellow to orange-red.  Tolerant of alkaline soils.  Drought tolerant.

MAPLE, PATTERN PERFECT TATARIAN (Acer tataricum ‘Pattern Perfect’)  See Tatarian Maple.

Amur/Ginella Maple Autumn Blaze Maple Autumn Fantasy Maple Bigtooth Maple Columnar Norway Maple Deborah Maple Emerald Lustre Maple Emerald Queen Maple Fairview Norway Maple Hedge Maple Parkway Maple Rocky Mountain Maple Sensation Maple State Street Maple Tatarian Maple . Amur/Ginella Maple

OAK, BUR (Quercus macrocarpa) ht 50-60ft., spd 35-45ft. Full sun to part shade.  Low water needs (xeric).  Pyramidal to oval in its youth, gradually maturing into a broad crowned tree with a massive trunk and very stout branches.  Bark is rough and deeply furrowed, dark gray-brown in color.  Acorns ¾” to 1 ½” are enclosed by a heavily fringed cap.  Leaves are dark green on top, gray green beneath.  Fall color varies from brown to yellow to burgundy-red.  Withstands drought wind, extreme cold, alkaline soils, and heavy soils:  an excellent tree for Colorado.

OAK, ENGLISH (Quercus robur)  Ht 50-60 ft, Spd 35-45 ft.  Tolerates Full Sun.  Low to moderate water needs.  The young English Oak will start out in a pyramidal form, but mature as a large, massive, round-topped tree.  Dark gray deeply furrowed bark.  Acorns up to 1” in length.  The leaves are deep green above and light blue-green beneath, and have a brownish fall color.  The leaves will also hang on the tree providing some winter interest. 

OAK, ENGLISH COLUMNAR  (Quercus robur ‘Fastigiata’)  Ht. 50-60 ft., spd. 15-20ft.  Full sun.  Low to moderate water needs.  An interesting columnar tree for smaller spades.  A narrow form of the English Oak with lobed medium green leaves that hang on the tree until winter.  No significant fall color.  Great as a specimen, or planted in a row as a screen. 

OAK, GAMBEL  (Quercus gambelli)  Ht. 15-30 ft. Spd. 12-20 ft.  Full sun.  Low water needs (xeric).  Native Rocky Mountain oak with a shrubby growth habit but may also grow as a small tree to 30’.  Glossy green leaves turn a golden yellow to an occasional orange or red in fall.  Tolerates both dry conditions and alkaline soils.  Hardy to 8000’, where it grows in beautiful groves that may cover entire mountainsides.

OAK, NORTHERN PIN (Quercus ellipsoidalis)  ht. 50-70 ft. spd. 30-40 ft., Full sun to part shade.  Low to moderate water needs.  New leaves emerge fuzzy pink and mature to glossy bright green.  Fall color is scarlet red and can be spectacular with the leaves holding on into winter.  Conical as a young tree maturing to a broad oval.  An oak that is salt, drought, and heat resistant, and certainly worth a try in our area.

OAK, NORTHERN RED (Quercus rubra)  Ht 50-70 ft, Spd 30-40 ft.  Full sun to part shade.  Low to moderate water needs.  Fast growing oak with a broad-spreading, open crown.  Medium green leaves turn brick-red/russet in the fall.  It does prefer acid soils, but there are older specimens along the Front Range making this a tree worth a try!

OAK, SHUMARD (Quercus shumardii)  Ht. 50 ft.  Spd. 40 ft.  Full sun to part shade.  Low to moderate water needs.  Very adaptable to varying soil conditions and tolerates clay soils.  Aside from its’ dark green foliage and Red fall color the key to this tree is as mentioned ADAPTABLE. 

OAK, WAVYLEAF (Quercus undulata)  Ht. 10-20 ft., spd. 10-15 ft. Full sun.  Low water needs (xeric).  Small tree or large shrub, native to the southern Rocky Mountains.  Thick, leathery leaves are blue to green in color and have wavy margins.  Tolerates dry soils.  In a very protected site may be semi-evergreen.

OAK, WHITE (Quercus bicolor) ht 40-50ft., spd 40-45ft. Full sun to part shade.  Low to moderate water needs.  Nearly as broad as tall and forms a broad, open, round topped crown. 1” acorn is a shiny light brown in color.  Bark is flaky brown developing into rugged handsome old trunks.  Oblong lobed leaves are 5-8” in length, deep green above, whitish and velvety beneath.  Fall color is russet to red.

OHIO BUCKEYE (Aesculus glabra)  Ht. 30-50 ft.,  Spd. 20-30 ft.  Full sun.  Low to moderate water needs.  A durable globe shaped tree, variable in height, usually low branched with the branches bending down toward the ground then arching back up at the ends.  Dense foliage is dark green in summer.  Fall color is often yellow but at times develops a brilliant orange-red to reddish brown.  Large greenish yellow flowers appear in spring followed by prickly seedpods.  Good small tree with distinctive characteristics.  Seeds are poisonous to people, but the squirrels like them. 

Bur Oak Columnar English Oak English Oak Gambel Oak Northrn Pin Oak Northern Red Oak White Oak Ohio Buckeye . Bur Oak

PEAR, ARISTOCRAT  (Pyrus calleryana ‘Aristocrat' )  Ht. 40-50 ft., spd. 40 ft. Full sun.  Low to moderate water needs. This tree is remarkably adaptable! It is pest resistant and tolerates drought, poor drainage and just about any soil. It can thrive despite the effects of moderate winds, smog, and extreme temperatures. The Aristocrat's foliage is dark, glossy green that turns to a deep, regal red in the fall. Its beautiful flowers are white, one inch across, and form in clusters in March. Aristocrat has an open, informal appearance. Branch angles are wider than other pears, notably the Bradford, and this means the Aristocrat is more resistant to storm damage.

PEAR, AUTUMN BLAZE  (Pyrus calleryana ‘Autumn Blaze’ PP4591)  Ht. 30-35ft., spd. 15-20ft.  Full sun.  Low to moderate water needs.  White flowers bloom in early spring before the leaves emerge.  Glossy green foliage.  Outstanding, crimson-red fall color.  One of the most cold hardy of the “callery” pears.

PEAR, BURGUNDY USSARIAN (Pyrus ussuriensis ‘Burgundy’)  Ht. 20-25ft., spd. 15-25ft.  Full sun.  Low to moderate water needs. White flowers born in cluster in early May, usually won’t appear until tree is older (3-4” in caliper).  The fall color is a brith burgundy-red.  Vigorous grower and hardier that Calleryana pear selections.  Fire blight resistant.  Can produce fruit and it is a Fort Collins Nursery selection.

PEAR, CHANTICLEER/CLEVELAND SELECT (Pyrus calleryana ‘Cleveland Select’)ht 30-35ft. spd 12-15ft., Full sun to part shade.  Moderate water needs. Clusters of white flowers in spring, glossy green foliage, Purple, reddish-orange fall color.  Upright, pyramidal shape.  A beautiful tree.

PEAR, REDSPIRE (Pyrus calleryana ‘redspire’)  ht. 35-45 ft. spd 20-30 ft.  Full sun to part shade.   Moderate water needs.  Quickly grows 35 to 45 feet high and 20 feet wide, with upright-spreading, thornless branches. The narrow crown enable this tree to be used in tight overhead spaces. In spring before the new leaves unfold, the tree puts on a nice display of pure white flowers The leaves emerge as red/purple, then become 1.5 to 3 inches long, glossy green with wavy margins and a red blush. They turn red to orange in fall putting on an attractive display. 

PEAR, USSARIAN SELECT (Pyrus ussuriensis ‘Ft. Collins Select’)  ht. 20-25 ft. spd. 15-25 ft.  Full sun to part shade.   Moderate water needs.  A selection with an upright oval form and dark glossy green foliage.  White 1-1 ½” flowers bloom in clusters in early May.  The fall color varies but usually is deep scarlet.  The good news is that this is a much hardier selections than some other pears, it is fire blight resistant,  the small fruit is tasty, and it is grafted for increased tolerance to alkaline soils.   

Aristocrat Pear Autumn Blaze Pear Chanticleer Pear Cleveland Select Pear Redspire Pear Ussurian Pear . Aristocrat Pear

PLUM, AMERICAN (Prunus Americana) ht. 10-12ft. spd. 10-12ft.  Full sun to part shade.  Low to moderate water needs. Very fragrant 1” white flowers open before the leaves emerge.  1” yellow to red fruit ripens in August and can be used for jams or jellies.  Can be grown as a multi-stem or a single stem small tree.  Will tolerate dry alkaline soils and thrives on neglect.  In the wild it suckers and spreads to form lovely drifting colonies.

PLUM, BAILEY SELECT NEWPORT (Prunus cerasifera newport ‘Bailey Select’)  Ht. 15-20 ft., spd. 15-20 ft. Full sun.  Low to moderate water needs.  NEW variety of Newport Plum that tolerates Alkaline soils and heavier soils.  Fragrant flowers of pale pink emerge all along branches in spring followed by striking maroon red foliage.  Small, edible plums may develop, but not every year.  Used to provide color contrast in border plantings or as a showy specimen. 

PLUM, NEWPORT (Prunus cerasifera ‘Newport’)   Ht. 15-20 ft., spd. 15-20 ft. Full sun.  Low to moderate water needs.  Popular old standby.  Fragrant flowers of pale pink emerge all along branches in spring followed by striking maroon red foliage.  Small, edible plums may develop, but not every year.  Used to provide color contrast in border plantings or as a showy specimen.  Prefers well-drained soils, or plant higher in heavier soils.

PLUM, PRINCESS KAY (Prunus nigra ‘Princess Kay’ )  ht. 12-15 ft. spd. 8-10 ft., Full sun to part shade.  Low to moderate water needs.  A small upright plum with dark brown, to almost black bark.  Showy, fragrant double white flowers appear in May before the leaves, followed by 1 ¼” red fruit ripening in August.  Lovely orange-red fall color.  The dark bark with its prominent lenticels provides good winter interest.  An excellent, hardy small ornamental tree. 

POPLAR, CHINESE WHITE (Populus tomentosa)  Ht. 40-70 ft., spd 30-50 ft.  Full sun.  Low to moderate water needs.  A large spreading shade tree similar to Silver Poplar, but does not sucker like Silver Poplar.  Chalky white bark when young becoming furrowed with age.  Leaves are glossy dark green above and wooly white on their undersides.  Twigs are gray tomentose.  The most commonly used shade tree in its native Northern China.

REDBUD, EASTERN (Cercis canadensis)  Ht. 20-30ft., spd. 20-30ft.  Full sun to part shade.  Low to moderate water needs.  Small, flat-topped tree.  One of the earliest trees to bloom in the spring.  Produces long lasting magenta blooms on the bare stems before leaves appear in early April.  Heart-shaped foliage changes to yellow in fall. Needs a protected location.  Once the root system is established the tree seems to perform well.

SERVICEBERRY, AUTUMN BRILLIANCE (Amelanchier x grandiflora ‘Autumn Brilliance’)  Ht. 15-20’, spd. 10-15’.  Full sun to part shade.  Low to moderate water needs.  Rounded growth habit with moderately spreading branches.  Clusters of showy white flowers appear in April, followed by a tasty, purplish-black, blueberry-like fruit.  Fall color is bright orange-red.  Strong branching resists ice and snow breakage.  Can be grown as a small single stem, or attractive multi-stemmed tree.  May sucker.

SERVICEBERRY, SHADBLOW (Amelanchier canadensis) ht. 6-20+ ft.,  spd. 8-12 ft. Full sun to part shade.  Low water needs (xeric).  Large shrub or small tree.  There is a great variation in size within the species.  Showy white flowers appear in early spring before foliage.  Purplish-black berries were favorites of Native American tribes.  Good yellow to red fall color.

WHITEBEAM, SWEDISH (Sorbus intermedia )  ht. 20-35 ft. spd. 25-40 ft., Full sun to part shade.  Low to moderate water needs.   A medium sized ornamental tree with great seasonal interest.  The rich leathery leaves are oak-like in shape, dark glossy green on their upper surfaces, and gray on their undersides.  Clusters of creamy white flowers bloom in late springs and are followed by showy bright orange berries in September.  Russet-orange to apricot fall color.  Smooth glossy sienna-brown bark on younger stems.  Tolerant of alkaline soils.

WILLOW, GLOBE (Salix matsudana ‘Navajo’)  Ht. 35 ft., spd. 30 ft.  Full sun to part shade.  Moderate water needs.  A very tough and hardy tree that will adapt to a wide range of soil conditions including desert. 

WINTERBERRY  (Euonymus bungeanus)  Ht. 18-15 ft., Spd. 15-20 ft.  Full sun to part shade.  Low to moderate water needs.  Small, rounded tree with slender horizontal branches.  Light green foliage turns red in fall.  Small inconspicuous flowers are followed by a very slow showy, 4-lobed, pink to red capsule fruit that holds well after the leaves drop.  A very hardy and adaptable tree for small areas. 

American Plum Newport Plum Princess Kay Plum Chinese White Popular Eastern Redbud Swedish Whitebeam Globe Willow Winterberry . American Plum