Jun 3, 2021 · 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 can reach 15 to 18 feet. Douglas-fir ranks as the second tallest tree species in the world behind coastal redwood.

The coast Douglas-fir variety is the dominant tree west of the Cascade Mountains in the Pacific Northwest. It occurs in nearly all forest types and competes well on most parent materials, aspects, and slopes.

Pseudotsuga menziesii var. menziesii, commonly known as Coast Douglas-fir, Pacific Douglas-fir, Oregon pine, or Douglas spruce, is an evergreen conifer native to western North America from west-central British Columbia, Canada southward to Central California, United States.

The Douglas-fir beetle (Dendroctonus pseudotsugae) is a destructive insect pest in old-growth stands of coastal and interior Douglas-fir. Its impact is diminishing, however, with the change to second-growth management and rotations of less than 100 years (24).

The Coast Douglas Fir or Coast Douglas-fir, Pseudotsuga menziesii var. menziesii, is an evergreen conifer variety of Douglas Fir (Pseudotsuga menziesii) native to western North America, from central California north through Oregon and Washington to …

This animal nests almost exclusively in the foliage of Douglas-fir trees. Nests are located 6 to 157 feet (2-48 m) above the ground. The red vole's diet consists chiefly of coast Douglas-fir needles . In many areas coast Douglas-fir needles are a staple in the spring diet of blue grouse .

Nearly every type of old-growth Douglas-fir forest on British Columbia’s dry coastal plain is now rare or endangered. Ministry of Environment, Lands and Parks. Why are coastal Douglas-fir ecosystems at risk?T.

Help protect the unique and fragile Coastal Douglas-fir ecosystem, home to diverse forests, wetlands, and shorelines. Your support enables collaborative conservation efforts to safeguard this vital region for future generations.

Sep 9, 2024 · The Coast Douglas-fir, for example, can grow up to 3 feet per year in its first 50 years, making it one of the fastest-growing conifers in North America. Silviculture practices, such as thinning and pruning, are often employed to enhance the growth and quality of Douglas stands. These practices not only improve the timber quality but also ...

Coast Douglas-fir (Pseudotsuga menziesii var. menziesii) is a large tree with dark yellow-green needles and large cones that is found on the Pacific coast. The Rocky Mountain Douglas-fir ( Pseudotsuga menziesii var. glauca ) is a medium-sized …