In colorado it grows naturally with ponderosa pine and lodgepole pine forests especially on the moister and cooler north facing slopes.
Douglas fir tree colorado.
Douglas fir which has sometimes been called the douglas tree oregon pine and douglas spruce is not actually a true fir a pine or a spruce.
Indicative of the taxonomic confusion about this tree the scientific genus name pseudotsuga means false hemlock alluding to yet another kind of tree somewhat similar to this unique but.
The alpine zone above 11 500 feet is a treeless zone made up of grasslands called tundra.
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Colorado s major tree species include bristlecone pine colorado blue spruce douglas fir engelmann spruce limber pine lodgepole pine narrowleaf cottonwood quaking aspen piƱon pine plains cottonwood ponderosa pine rocky mountain juniper subalpine fir and white fir.
Dense forests of subalpine fir and engelmann spruce dominate the subalpine zone at 9 500 to 11 500 feet.
The coast douglas fir variety is the dominant tree west of the cascade mountains in the pacific northwest occurring in nearly all forest types competes well on most parent materials aspects and slopes.
It is a high valued timber species because of the strength of its wood.
It prefers full sunlight.
The montane zone consists of ponderosa pine douglas fir lodgepole pine and aspen woodlands at elevations of 8 000 to 9 500 feet.
Adapted to a moist mild climate it grows larger and faster than rocky mountain douglas fir.