It commonly lives more than 500 years and occasionally more than 1,000 years. Pseudotsuga menziesii, commonly known as Douglas fir or Douglas-fir, is an evergreen conifer species native to western North America Pseudotsuga menziesii. Trees 200-250 feet or more in height and 5-6 feet in diameter are common in old growth stands, and heights of 300-400 feet were reported by early lumbermen. It is also the second-tallest evergreen in the world after the Coast Redwood. Douglas-fir is a large conifer, evergreen tree in the Pinaceae (pine) family that grows 40 to 80 feet tall when cultivated but as tall as 300 feet in the wild. The Douglas squirrel harvests and caches great quantities of Douglas fir cones for later use, and the squirrels will also eat mature pollen cones, the inner bark, terminal shoots, and tender young needles.įun facts: Douglas fir (Pseudotsuga menziesii) is neither a true fir, nor is it a hemlock (hence the Latin name, *Pseudo*tsuga). The seeds have a single wing and are dispersed by wind. Black-tailed deer and elk will eat the seeds late in winter when other forage is scarce. Research Highlights: The correlations between seed mass and the remaining physical properties were determined in selected fir species, and a method for seed sorting was proposed to promote uniform germination and emergence. Douglas firs are conifers, which means they produce seeds in cones rather than in flowers. Mice, voles, shrews, chipmunks, pine siskins, song sparrows, golden-crowned sparrows, white-crowned sparrows, red crossbills, dark-eyed juncos, and purple finches all eat the abundant seeds. Many kinds of wildlife depend on Douglas fir for winter forage. The male cones disperse yellow pollen in spring. The 2-4 inch long cones are green in spring, maturing to orange-brown in the autumn 6-7 months later. Douglas fir foliage has a noticeable sweet fruity-resinous scent, particularly if crushed. The needle-like leaves are spirally arranged and 2-3.5 cm long, and a bud at the tip of most branches distinguishes it from other evergreens. None of our seed imates similar to areas to be planted. The bark is thin, smooth, and gray on young trees, and thick and corky on older trees. Orthodox, that is to say seeds with the capability to withstand desiccation and. Our high-yield Weyerhaeuser Select genetically improved Douglas fir seed is available for sale to reforestation customers in British Columbia, Washington and Western Oregon. We used this photo in a blog about Douglas firs and their benefits to wildlife. This is a good tree to plant in groups as a windbreak, or at the edge of wooded areas, as it needs plenty of space. It grows fast and can tolerate many soil types. Douglas fir is one of the most common evergreen trees in the our region.
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