Colorado’s Major Tree Species
Colorado’s major tree species include bristlecone pine, Colorado blue spruce, Douglas-fir, Engelmann spruce, limber pine, lodgepole pine, narrowleaf cottonwood, quaking aspen, piñon pine, plains cottonwood, ponderosa pine, Rocky Mountain juniper, subalpine fir and white fir.
Characteristics & Descriptions
Bark: Gray-brown with thick scales on mature trees.
Leaves: Evergreen needles are blue or light green with white lines; 1 to 1-1/4 inches long. stiff and the points extremely sharp, light green with a white stripe.
Fruit: Shiny light brown, cylindrical cones; 2 to 4 inches long with thin, long, flexible and irregularly toothed scales; contains paired, long-winged seeds.
Elevation: 6,700 to 11,500 feet.
Height: 70 to 115 feet.
Habitat: Well-drained, sandy soils; moist sites of narrow bottomlands or along mountains streams; often in pure stands.
Relation to Fire: Easily killed by fire due to thin bark, shallow roots and low branches.