Native Trees

Common Name	Scientific Name	Hgt x Width	Growth Requirements	Comments
Red Maple	Acer rubrum	up to 100 ft.	Deep, moist well-drained soil, low drought tolerance, Zone 4	Native to Eastern U.S., great fall colors, use for street tree, shade, or in large landscapes.
Boxelder	Acer negundo	up to 60 ft.	Deep, moist, well drained soil, Zone 5	Native to Eastern N. America, fast growing, hardy tree, use for foliage contrast, on riverbanks, and for shade.
Mountain Alder	Alnus tenuifolia	up to 30 ft.	Moist, well-drained soils, Zone 3	Very winter hardy, spreading domed canopy, use for windbreaks, screen, or near water features.
River Birch	Betula nigra	up to 30 ft.	Well-drained fertile soils w/ reliable moisture, Zone 4	Winter hardy, tolerates heat, bark peels, use in woodland garden.
Water Birch	Betula fontinalis	shrub 20 ft. tree 40x20ft.	Well-drained fertile soils w/ reliable moisture, Zone 4	Habit shrub, sometimes tree, bronze-colored bark
Paper Birch	Betula papyrifera	up to 60 ft.	Well-drained fertile soils w/ reliable moisture, Zone 2	Papery white bark peels to reveal orange-brown color, use in group plantings.
Common Hackberry	Celtis  occidentalis	60 ft. tall	Well-drained soil	Spreading canopy w/ dark green leaves and red-purple fruit. Use; shade tree. Very hardy.
Rocky Mountain Juniper	Juniperus scopulorum	15 to 30 ft.	Well-drained soil, prefers full sun, drought tolerant, Zone 3	Evergreen; has blue-green foliage, use for hedges, windbreak, or conifer gardens.
Blue Spruce (Colorado)	Picea pungens	50 to 100 ft.	Well-drained soil, sun to partial shade, Zone 2	Evergreen; pyramidal growth habit, gray bark, blue-green leaves, use in large landscapes, conifer gardens, or windbreaks.
Ponderosa Pine	Pinus ponderosa	up to 130 ft.	Well-drained soil, sun to partial shade, drought tolerant, Zone 3	Evergreen; most common pine in N. America, use in conifer gardens, shade tree, timber, in large landscapes.
Black Cottonwood	Populus trichocarpa	80 to 120 ft.	Deep, moist, well-drained soil, prefers full sun, Zone 4	Spreading growth habit, yellow fall color, use in parks, large landscapes, windbreaks, and for color
Eastern Cottonwood	Populus deltoids	80 to 100 ft.	Deep, moist, well-drained soil, Zone 2	Spreading growth habit, sheds large amounts of ‘cotton’, use for windbreaks, in parks, and large landscapes.
Lombardy Poplar	Populus nigra	up to 100 ft.	Deep, moist, well-drained soil, Zone 2	Great for fall colors, columnar growth habit, use in parks, large landscapes, and windbreaks.
Quaking Aspen	Populus tremuloides	20 to 50 ft.	Deep, moist, well-drained soil, Zone 2	A hardy tree w/ yellow grey bark, dark green leaves turn yellow in fall, use for color, woodland gardens, foliage display.
Bur Oak	Quercus macrocarpa	up to 120 ft.	Deep, fertile, moist, well-drained soil, Zone 4	Massive trunk w/ spreading branches, glossy leaves, large acorns, use in woodland gardens, shade tree.
Mountain Ash	Sorbus stichensis	15 to 20 ft.	Moist soil, sun or partial shade, Zone 3	Large shrub or small tree w/ fragrant, small white flowers and small apple like fruit, use in woodland landscapes.
Mountain Ash - Greene's	Sorbus scopulina	10 to 15 ft.	Well-drained soil, full sun, will tolerate partial shade, Zone 3	Shrub or small tree, w/ white flowers, orange and red autumn color, red berries, use in woodland landscapes.