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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 spruce, [6] Oregon pine, [7] and Columbian pine. [8]
The hardest hardwoods are much harder than any softwood, [4] but in both groups there is enormous variation with the range of wood hardness of the two groups overlapping. For example, balsa wood, which is a hardwood, is softer than most softwoods, whereas the longleaf pine, Douglas fir, and yew softwoods are much harder than several hardwoods.
Pseudotsuga / ˌ sj uː d oʊ ˈ t s uː ɡ ə / [1] is a genus of evergreen coniferous trees in the family Pinaceae (subfamily Laricoideae).Common names for species in the genus include Douglas fir, Douglas-fir, Douglas tree, Oregon pine and Bigcone spruce.
Coast Douglas-fir is the fourth tallest conifer and fifth tallest of all trees in the world (after sitka spruce).Currently, coast Douglas-fir trees 60–75 metres (197–246 ft) or more in height and 1.5–2 metres (4.9–6.6 ft) in diameter are common in old growth stands, [4] and maximum heights of 100–120 metres (330–390 ft) and diameters up to 4.5–5.5 metres (15–18 ft) have been ...
Softwood from North American conifers has a variety of commercial uses. The sturdier timber is milled for plywood, wood veneer and construction framing, including structural support beams and studs. Logs can be fashioned into posts, poles and railroad ties. Less sturdy timber is often ground and processed into pulpwood, principally for papermaking.
Jack pine (Pinus banksiana) Lodgepole pine (Pinus contorta) Monterey pine (Pinus radiata) Ponderosa pine (Pinus ponderosa) Red pine (North America) (Pinus resinosa) Scots pine, red pine (UK) (Pinus sylvestris) White pine. Eastern white pine (Pinus strobus) Western white pine (Pinus monticola) Sugar pine (Pinus lambertiana) Southern yellow pine