Douglas Fir:
The Douglas-fir, named for David Douglas, a 19th century Scottish botanist, was designated state tree in 1939. Great strength, stiffness and moderate weight make it an invaluable timber product said to be stronger than concrete. Averaging up to 200' in height and six feet in diameter, heights of 325' and diameters of 15' can also be found.
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Courtesy of State of Oregon
