Douglas fir - Wikipedia
The Douglas fir (Pseudotsuga menziesii) [4] is an evergreen conifer species in the pine family, Pinaceae. It is native to western North America and is also known as Douglas-fir, [5] Douglas …
Douglas fir | Description, Uses, & Species | Britannica
2024年10月15日 · Douglas fir, genus of about six species of evergreen trees of the conifer family Pinaceae, native to western North America and eastern Asia. They are important timber trees …
Douglas-fir | The Morton Arboretum
Douglas-fir grows best in moist, neutral to acidic soil in full sun. It does not like hot, dry sites, and prefers a cooler climate. Stressed trees are susceptible to needle diseases and insect …
Douglas Fir - National Wildlife Federation
Douglas firs are evergreen trees, meaning they keep their needle-like leaves year-round. There are two varieties of this species, coast Douglas fir and Rocky Mountain Douglas fir, which are …
Coast Douglas-fir - U.S. National Park Service
2021年6月3日 · Coast Douglas-fir (Pseudotsuga menziesii menziesii) commonly reach 250 feet tall and 5 to 7 feet wide, though maximum heights can reach well over 300 feet and diameters …
Douglas-Fir - US Forest Service Research and Development
Douglas-fir (Pseudotsuga menziesii), also called red-fir, Oregon-pine, Douglas-spruce, and piño Oregon (Spanish), is one of the world's most important and valuable timber trees. It has been …
Douglas Fir - Trees | seattle.gov
Known for its noble, upright growth and lush needles which form a beautiful downward sweeping canopy. This tree is great for wildlife habitat. Power Line Approved: No. Min. street tree …
Pseudotsuga menziesii (Douglas-fir) description - conifers.org
2023年4月16日 · Douglas-fir is the state tree of Oregon (Lipscomb 1993). Both subspecies are host to the dwarf mistletoe Arceuthobium douglasii ( Hawksworth and Wiens 1996 ). This is …
Pseudotsuga menziesii (Blue Douglas Fir, Doug Fir, Douglas Fir, Douglas …
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. It is one of the largest trees in the world, …
Douglas-fir (Pseudotsuga menziesii) - Forest Research and Outreach
Douglas-fir is not a true fir at all, nor a pine or spruce. It is a distinct species named after its discoverer Archibald Menzies and a botanist, David Douglas. A major characteristic that …