Colorado State Tree - Colorado Blue Spruce - Picea pugens

Colorado Blue Spruce Pinaceae Picea pungens

Leaf: Evergreen, stiff, 3/4 to 1 1/4 inch long, yellow-green to bluish or white. Needles are very sharp, and have an acidic taste.

Flower: Monoecious; males yellow-brown to purple, scattered throughout trees; females purple, upright, in tops of the trees.

Fruit: Cones are 2 to 4 inches long, cylindrical, light brown in color. Cone scales are pointed with jagged-erose margins. Maturing in autumn.

Twig: Stout (when compared to other spruces), hairless, orange-brown. Needles are borne on woody pegs. Bud scales are noticeably reflexed.

Bark: Gray to red-brown, young trees with small, thin scales - older trees developing furrows.

Form: A medium to large tree with pyramidal form. Branches appear layered, especially with age.

Copyright 2019 Virginia Tech Dept. of Forest Resources and Environmental
Conservation; Photos and text by: John Seiler, Edward Jensen,
Alex Niemiera, and John Peterson;Silvics reprinted from Ag
Handbook 654; range map source information
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