Douglas-fir Pseudotsuga menziesii

Form:

Description Large to very large tree with narrow, pointed crown of slightly drooping branches; 2 distinct geographic varieties: Coast and Rocky Mountain.
Height: 80-200' (24-61 m).Diameter: 2-5' (0.6-1.5 m), sometimes much larger.

 

Bark:

reddish-brown, very thick, deeply furrowed into broad ridges; often corky.

 

 Twigs:

reddish-brown, very thick, deeply furrowed into broad ridges; often corky.

 Buds:

 

Leaves Needles:

evergreen; spreading mostly in 2 rows, 3/4-1 1/4" (2-3 cm) long. Flattened, mostly rounded at tip, flexible; dark yellow-green or blue-green; very short, twisted leafstalks.:

 

 Flowers:

 

 Fruit-Cones:

 2-3 1/2" (5-9 cm) long; narrowly egg-shaped, light brown, short-stalked; with many thin, rounded cone-scales each above a long, protruding, 3-pointed bract; paired, long-winged seeds.

 

Habitat:

     Coast Douglas-fir forms vast forests on moist, well-drained soils; often in pure stands. Rocky Mountain Douglas-fir is chiefly on rocky soils of mountain slopes; in pure stands and mixed coniferous forests.

  Local Range: 

A single Douglas Fir is on the east side of Collin Pond

Distinguishing Features: 

The  protruding, 3-pointed bract from the cone is a distinguishing feature.

Study tree:

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Canopy:

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Soil pH near study tree:

 

 

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