Douglas-fir is one of the world's best timber-producing species and yields more timber than any other species in North America, making the forestlands of western Oregon, Washington, and British Columbia the most productive on the continent. In 2011, Douglas-fir represented 34.2% of US lumber exports, to a total of 1.053 billion board-feet.

2023年9月28日 · Douglas fir, scientifically known as Pseudotsuga menziesii, is a popular evergreen tree native to western North America. From Central British Columbia on Vancouver Island, throughout the Rocky Mountains to central California, Arizona and Mexico, this coniferous tree thrives in various climates.

2025年3月3日 · Douglas fir, (genus Pseudotsuga), genus of about six species of evergreen trees of the conifer family Pinaceae, native to western North America and eastern Asia. The trees are important timber trees, and the strong wood is used in boats, aircraft, and construction.

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 a major component of the forests of western North America since the mid-Pleistocene (30).

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 differentiated by their habitats, growth rates, and physical characteristics.

What is Douglas Fir? The Douglas fir tree is a large, long-lived evergreen found in western North America and eastern Asia. There are six subspecies, but the trees can be broadly grouped into coastal Douglas firs and interior Douglas firs.

2024年1月13日 · Learn Douglas Fir Identification with our essential guide to recognizing needles, cones, and more, for enthusiasts and professionals alike!

Douglas-fir is excellent as a specimen plant or used en masse for screening. Although not a true fir, it is a beautiful evergreen for the larger landscape. It has a conical shape, similar to that seen on spruces.

Douglas-fir is a component of the redwood forest type, but as sites become drier farther inland, redwood gives way to mixed evergreen forests which are codominated by Douglas-fir, Pacific madrone, and tanoak. Canyon live oak, giant chinkapin, sugar pine, ponderosa pine, and incense-cedar are also found along with these dominant species. ...

2024年12月20日 · The Douglas fir is an evergreen conifer species in the pine family, Pinaceae. It is native to western North America and is also known as Douglas-fir, Douglas spruce, Puget Sound pine, Oregon pine, Red pine or Columbian pine.