Trees

Acer x fremanii ‘Jeffersred’ (PP4864) Autumn Blaze Maple

This is a fast growing hybrid of silver and red Maple. This maple can tolerate poor soil and is as drought tolerant as a silver maple. The fall color is a lovely bright red.

 

Ht: 40-50′

Mature Spread: 30-40′

Shape: Broad Oval

Fall Color: Red

Hardiness: Zone 4

Full Sun

Medium

 

Acer grandidentatum          Bigtooth Maple

This is a slow growing Rocky Mnt. native prized for its fall color. They are drought tolerant and alkaline soil tolerant.

 

 

 

 

 

Acer grandidentatum Bigtooth Maple

 

Ht: 30-40′                              *Native*

Mature Spread: 20-25′

Shape: Upright Oval

Fall Color: Yellow to Red

Hardiness: Zone 3

Full Sun

Dry

 

Acer tataricum     Tatarian Maple

This is an excellent small single or multi stemmed tree. The winged seeds turn brilliant red in summer. They have good yellow to maroon fall color. Tolerant of alkaline soils.

Acer tataricum Tatarian Maple

Ht: 20′

Mature Spread: 18′

Shape: Broad/Irregular

Flower Color: NA

Hardiness: Zone 3

Full Sun

Dry

 

Acer truncatum               Shantung Maple

This is a small rounded tree with leaves that start out purple than turn to a dark glossy green color.

Acer truncatum Shantung Maple

 

Ht: 25′

Mature Spread: 25′

Shape: Rounded

Flower Color: Yellow

Hardiness: Zone 4

Full Sun

Dry

 

Betula fontinalis         River Birch

This is a large shrub to multi stemmed tree with a round spreading growth habit. They have very attractive cinnamon brown bark. They are a native riparian tree.

 

Ht: 15-35′                               *Native*

Mature Spread: 15-25′

Shape: Rounded

Flower Color: Brown Catkins

Hardiness: Zone 3

Full to Part Sun

Moist to Adaptable

 

Catalpa bungei                  Umbrella Catalpa

This is a round headed tree with dense branching habit. This tree has a very unique umbrella like growth habit. Currently unavailable

 

Ht: 20-30′

Mature Spread: 20′

Shape: Globe

Flower Color: White

Fall Color: Yellow

Hardiness: Zone 4

Full Sun

Dry

 

Catalpa speciosa              Northern or Western Catalpa

The Northern Catalpa is a fast growing drought tolerant tree with large heart shaped leaves and vivid white flowers in June. The flowers are followed by long thin seed pods which hold on through winter.

 

Ht: 50-60′

Mature Spread: 30-40′

Shape: Upright Irregular

Flower Color: White

Fall Color: Yellow

Hardiness: Zone 4

Full Sun

Dry

 

Celtis occidentalis Hackberry

This is a large shade tree with upright branches forming a rounded canopy. This has a light green foliage and corky bark. Tolerates heavy soils and dry conditions.

 

Ht: 40′-60′ *Native*

Mature Spread: 40′-60′

Shape: Open /Round

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 3

Full Sun

Dry

 

 

Cersis canadensis                   Eastern Redbud

This is a small rounded tree with lavender flowers in early spring. Heart shaped leaves start reddish and mature to green. Trunk needs protection from winter sun to prevent sunscald while young.

Cersis canadensis   Eastern Redbud

 

Ht: 20′-30′

Mature Spread 20′-25′

Shape: Broad/Round

Flower Color: Lavender

Hardiness: Zone 4

Full to part Sun

Medium to Dry

 

Celtis canadensis ‘Forest Pansy’   Forest Pansy Redbud

This redbud has glossy red leaves in spring that become deep red color in late summer. It has reddish pink flowers in spring.

 

Ht: 20-25′

Mature Spread: 20-25′

Shape: Rounded

Flower Color: Reddish Pink

Fall Color: Yellow/Orange

Hardiness: Zone 5

Full to part Sun

Medium to Dry

Crataegus ambigua      Russian Hawthorn

This is a small attractive tree with interesting irregular branches and a broad head. They have white flowers in May are followed by dark red fruit. Great for attracting birds.

Crataegus ambigua      Russian Hawthorn

 

Ht: 15-25′

Mature Spread: 15-20′

Shape: Spreading

Flower Color: White

Hardiness: Zone 3

Full Sun

Dry

 

Crataegus crus-galli inermis ‘Cruszam’ Cockspur Crusader Hawthorn

This thornless hawthorn tolerates city air pollution well. They it has leathery glossy green leaves that turn orange in fall. It has bright red fruit in summer.

 

Ht: 15-20′

Mature Spread: 20-25′

Shape: Round

Flower Color: White

Fall Color: Orange /Red

Hardiness: Zone 3

Full Sun

Dry

 

Crataegus laevigata ‘Crimson Cloud’ Crimson Cloud Hawthorn

This is a vigorous disease resistant tree. They have red flowers with white centers are followed by small bright red fruits.

 

Ht: 15-20′

Mature Spread: 15-20′

Shape: Round

Flower Color: Red/White

Fall Color: Yellow

Hardiness: Zone 3

Full Sun

Dry

Crataegus viridis ‘Winter King’   Winter King Hawthorn

This is a small street tree with glossy green leaves, smooth gray bark, and clusters of white flowers in spring. The red fruits that follow persist into winter.

 

Ht: 15-20′

Mature Spread: 15-20′

Shape: Upright/Round

Flower Color: White

Fall Color: Yellow

Hardiness: Zone 3

Full Sun

Dry

 

Fraxinus americana ‘Junginger’        Autumn Purple Ash

This is a seedless variety of white ash that turns a deep purple in fall. Protect the trunk from winter sun when young to prevent sunscald. Very popular for it’s fall color.

Fraxinus americana ‘Junginger’ Autumn Purple Ash

 

Ht: 40-50′

Mature Spread: 35-45′

Shape: Round

Flower Color: N/A

Fall Color: Deep Purple

Hardiness: Zone 4

Full Sun

Dry

 

Fraxinus anomala           Single Leaf Ash

This is a small slow growing tree or large shrub native to western Colorado. The rounded leaves are an anomaly for Ash. They are extremely drought tolerant. Currently unavailable

 

Ht: 10-20′                                *Native*

Mature Spread: 10-15′

Shape: Upright oval

Fall Color: Yellow

Hardiness: Zone 3

Full Sun

Very Dry Currently Unavailable

 

Fraxinus pennsylvanica ‘Patmore’ (PP4684)  Patmore Ash

This is a seedless variety with an upright oval growth habit. Adapts well to adverse conditions. Grows symmetrical and uniform, needing little or no pruning. Discontinued due to borer problems

 

Ht: 50-60′

Mature Spread: 30-35′

Shape: Oval

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 2

Full Sun

Dry

 

Fraxinus pennsylvanica ‘Marshall’         Marshall Ash

This is a seedless variety with a rounded crown. Large dark green leaves in summer. Shape is somewhat irregular when young. Good yellow fall color. Discontinued due to borer problems

 

Ht: 50-60′

Mature Spread: 30-45′

Shape: Rounded

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 4

Full Sun

Dry

 

Fraxinus pennsylvanica ‘Summit’     Summit Ash

This is a seedless variety with upright symmetrical branching. It has dark green pointed leaves. A smaller shade tree for smaller areas. Discontinued due to borer problems

 

Ht: 40-45′

Mature Spread: 25-30′

Shape: Upright oval

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 4

Full Sun

Dry

 

Ginkgo biloba                    Ginkgo, Maidenhair Tree

Ginkgo is one of the most ancient trees. It is a large spreading tree that works well in street planting and parks. It has beautiful fan shaped leaves.

Ginkgo biloba Ginkgo

Ht: 50-60′

Mature Spread: 40-50′

Shape: Spreading

Flower Color: N/A

Fall Color: Golden Yellow

Hardiness: Zone 4

Full Sun

Dry

 

Gleditsia tricanthos ‘Impcole’      Imperial Honeylocust

This is a compact form of seedless honeylocust. It has bright green compound leaves that turn gold in the fall. Works well as a smaller street tree.

 

Ht: 30-35′

Mature Spread: 30-35′

Shape: Round

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 4

Full Sun

Dry

 

Gleditsia tricanthos ‘Shademaster’  ShademasteHoneylocust

This is a graceful tree with ascending branches and a strong straight trunk. It is seedless and disease resistant.

 

Ht: 40-50′

Mature Spread: 30-35′

Shape: Upright

Flower Color: N/A

Fall Color: Gold

Hardiness: Zone 4

Full Sun

Dry

 

Gleditsia tricanthos ‘Skycole’    Skyline Honeylocust

This is a stately tree with uniform branching and dark green leaves.

 

Ht: 40-50′

Mature Spread: 35-45

Shape: Upright

Flower Color: N/A

Fall Color: Gold

Hardiness: Zone 4

Full Sun

Dry

 

Gleditsia tricanthos ‘Suncole’    Sunburst Honeylocust

This tree is known for its bright yellow leaves and stems on new growth that turn green as they mature. It has a symmetrical airy growth habit.

 

Ht: 30-40′

Mature Spread: 35-40′

Shape: Spreading

Flower Color: N/A

Fall Color: Gold

Hardiness: Zone 4

Full Sun

Dry

 

 

 

Juniperus osteosperma      Utah Juniper

This is a dense upright evergreen shrub to tree native to western Colorado and Utah. They are extremely drought tolerant and alkaline tolerate soils. Currently unavailable due to slow growth. We are using Singleseed Juniper as a replacement.

 

Juniperus osteosperma Utah Juniper

 

Ht: 20-30′                               *Native*

Mature Spread: 10-15′

Shape: Broad Upright

Berry Color: Blue

Hardiness: Zone 3

Full Sun

Very Dry

 

Juniperus scopulorum           Rocky Mnt. Juniper

This is an upright pyramidal evergreen tree with grey green needles and waxy blue berries. Shape varies widely in the species. For a consistent shape, go with one of the many named varieties.

 

Ht: 20-30′                               *Native*

Mature Spread: 8-12′

Shape: Pyramidal

Berry Color: Blue

Hardiness: Zone 3

Full Sun

Dry

 

Koelreuteria paniculata                Golden Raintree

The compound leaves, irregular shape, and bold panicles of yellow flowers, make this a unique and desired tree. Add the papery “Chinese lanterns”, heat and drought tolerance, and you have a good street tree or ornamental.

 

Ht: 30-35′

Mature Spread: 25-30′

Shape: Rounded

Flower Color: Yellow

Fall Color: Yellow

Hardiness: Zone 5

Full Sun

Dry

 

 

 

Liriodendron tulipifera               Tuliptree

This tree has square shaped leaves. The older trees produce green tulip shaped flowers in spring. Native to eastern U.S., it grows much smaller and denser in Colorado.

 

Ht: 40-50′

Mature Spread: 30-40′

Shaped: Oblong

Flower Color: Yellow/Green

Fall Color: Yellow

Hardiness: Zone 4

Full Sun

Medium

 

Morus alba pendula ‘Chaparral’  ChaparralWeepingMulberry

This is a fruitless variety with slender cascading branches and dense, glossy green leaves. It is drought and pollution tolerant. Makes a uniquely shaped ornamental as it matures. Currently unavailable

 

Ht: 15-20′

Mature Spread: 15′

Shape: Weeping

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 4

Full Sun

Dry

 

Pinus edulis                          Pinyon Pine

This is a dense rounded evergreen tree with deep green needles. They are loved for their delicious nuts. They are extremely drought tolerant and they do not tolerate over watering.

Pinus edulis Pinyon Pine

Ht: 20-30′                               *Native*

Mature Spread: 10-20′

Shape: Pyramidal

Flower Color: Brown Cone

Hardiness: Zone 3

Full Sun

Very Dry

 

Populus acuminata_     Lanceleaf Cottonwood

This is a tall upright tree with a rounded crown. Glossy green lance shaped leaves. They are a fast growing native. They are a great shade tree.

 

Ht: 40-60′ *Native*

Mature Spread: 35-50′

Shape: Round

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 3

Full Sun

Moist

 

Populus angustifolia             Narrowleaf Cottonwood

Fast growing native tree with a pyramidal growth habit. Needs water to survive! The smallest of the native cottonwoods, growing at the higher elevations.

 

Ht: 40-60′                               *Native*

Mature Spread: 25-35′

Shape: Broadly Pyramidal

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 3

Full Sun

Moist

 

Populus fremontii Fremont Cottonwood

This is a fast growing tree with an irregular growth habit. Fremont Cottonwood is native to the western slope. Very similar to Sargent Cottonwood, but smaller in stature.

Populus fremontii Fremont Cottonwood

 

Ht: 50-60′                                 *Native*

Mature Spread: 40-50′

Shape: Irregular

Hardiness: Zone 3

Full Sun

Moist

 

Populus sargentii Sargent Cottonwood, Plains Cottonwood

This is a broad irregularly rounded tree. They have large rich green leaves that turn golden yellow in fall. Native to the eastern slope, it’s the largest of the native cottonwoods. Great shade for large spaces.

Populus sargentii Sargent Cottonwood

 

Ht: 60-80′                                *Native*

Mature Spread: 50-60′

Shape: Broadly Round

Flower Color: N/A

Fall Color: Golden Yellow

Hardiness: Zone 3

Full Sun

Moist

Populus tremuloides                  Quaking Aspen

This is a native tree to the Rocky Mountains, colony forming tree with white bark and golden yellow fall color. Susceptible to leaf diseases at lower elevations. Amend the surrounding soil with lots of course organic material for best results.

Populus tremuloides Aspen

Ht: 20-30′                                *Native*

Mature Spread: 15-20′

Shape: Round

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 3

Full Sun

Moist to Medium

 

Prunus cerasifera ‘Newport’  Newport Flowering Plum

This tree has fragrant pink flowers in spring followed by maroon red foliage. The foliage fades toward green until fall, when it becomes purple/orange. Works well as a showy specimen or for color contrast.

 

Ht: 15-20′

Mature Spread: 15-20′

Shape: Round

Flower Color: Pink

Fall Color: Orange

Hardiness: Zone 4

Full Sun

Dry

 

Prunus cerasifera ‘Thundercloud’ Thundercloud Flowering Plum

This plum holds its dark purple leaf color all summer long. It blooms early in the spring. Darker than Newport Plum, but not as cold hardy.

 

Ht: 15-20

Mature Spread: 15-20′

Shape: Round

Flower Color: Light Pink

Fall Color: Orange

Hardiness: Zone 4

Full Sun

Dry

 

Prunus virginiana ‘Canada Red’ Canada Red Chokecherry

The new leaves come out bright green, then turn burgundy red as they get older. They have white flowers in spring and followed by dark purple fruit. Great for wildlife. Easier to grow as a clump or multi-stemmed tree.

 

Ht: 20-25′

Mature Spread: 18-20′

Shape: Broad Oval

Flower Color: White

Fall Color: Red

Hardiness: Zone 2

Full Sun

Medium to Dry

 

Ptelea trifoliata                Wafer Ash

This is a small multi-stemmed tree with a rounded crown. They have clusters of greenish-white flowers in late spring followed by papery seeds in summer that persist through the winter. This is an extremely drought tolerant tree. Discontinued due to lack of demand

Ptelea trifoliata Wafer Ash

 

Ht: 10-15′ *Native*

Mature Spread: 12-15′

Shape: Round

Flower Color: Green-White

Fall Color: Rust

Hardiness: Zone 3

Full Sun

Very Dry Very Limited Availability

 

Pyrus calleryana ‘Aristocrat’ (PP3193)  Aristocat Flowering Pear

This is a pyramidal tree with white flowers in spring and glossy green leaves that turn brilliant red in fall. One of the larger flowering pear varieties.

 

Ht: 30-35′

Mature Spread: 25-30′

Shape: Open Pyramidal

Flower Color: White

Fall Color: Red

Hardiness: Zone 4

Full Sun

Dry

 

Pyrus calleryana ‘Autumn Blaze’ Autumn Blaze Flowering Pear

This is an upright pyramidal tree. The young leaves have a reddish tint that mature into dark green. Flowering pears are resistant to a wide array of insects and disease.

 

Ht: 25-35′

Mature Spread: 15-25′

Shape: Pyramidal/Round

Flower Color: White

Fall Color: Red

Hardiness: Zone 4

Full Sun

Dry

 

Pyrus calleryana ‘Redspire’      Redspire Flowering Pear

This is a pyramidal tree that is covered with masses of white flowers in the spring. It is very adaptable to city conditions. With the glossy green leaves and narrow growth habit, it makes a great street tree or ornamental.

 

Ht: 30-35′

Mature Spread: 15-20′

Shape: Pyramidal

Flower Color: White

Fall Color: Red

Hardiness: Zone 3

Full Sun

Dry

 

Quercus macrocarpa   Bur Oak

This is a large tree with deeply grooved corky bark. The large leathery leaves turn to brilliant shades of yellow to brown, sometimes red, in fall. Great for a large shade tree. Tolerates heavy soils.

Quercus macrocarpa Bur Oak

 

Ht: 50-60′ *Native*

Mature Spread: 40-50′

Shape: Broad Rounded

Flower Color: N/A

Fall Color: Yellow/Brown

Hardiness: Zone 3

Full Sun

Dry

 

Quercus robur ‘Fastigiata’          Fastigiate English Oak

A narrow tree for small areas. Medium green leaves turn yellow briefly as they brown in fall and hang on into winter.

 

Ht: 40-50′

Mature Spread: 10-15′

Shape: Columnar

Flower Color: N/A

Fall Color: Yellow/Brown

Hardiness: Zone 5

Full Sun

Medium to Dry

 

 

Sorbus scopulina    Native Mountain Ash

This is a small sized clump forming tree with compound leaves and white flower clusters in the spring. Bright orange berries through out the summer, followed with yellow to red fall color. Native to our higher elevations. Limited availability

Sorbus scopulina Native Mnt. Ash

 

Ht: 10-15′ *Native*

Mature Spread: 10-12′

Shape: Round

Flower Color: White

Hardiness: Zone 2

Full to Part Sun

Medium

 

Ulmus ‘Morton’                    Accolade Elm

This is a vigorous drought tolerant and disease tolerant tree with a vase shaped growth habit similar to the original American elms..

 

Ht: 40-50′

Mature Spread: 35-40′

Shape: Vase

Flower Color: N/A

Fall Color: Yellow

Hardiness: Zone 3

Full Sun

Dry

 

Zelkova serrata ‘Green Vase’          Green Vase Zelkova

Introduced by Princeton Nurseries, this tree has beautiful arching branches. It makes a great replacement for elm trees and Ash Trees.

 

Zelkova serrata  Green Vase

 

 

Ht: 40-50′

Mature Spread: 30-35′

Shape: Vase

Flower Color: N/A

Fall Color: Yellow/Rust

Hardiness: Zone 4

Full Sun

Dry