blue spruce


noun

a spruce, Picea pungens, of western North America, having bluish-green leaves, grown as an ornamental: the state tree of Colorado and Utah.
Also called Colorado blue spruce, Colorado spruce.

Origin of blue spruce

An Americanism dating back to 1880–85

British Dictionary definitions for blue spruce

blue spruce

noun

a spruce tree, Picea pungens glauca, native to the Rocky Mountains of North America, having blue-green needle-like leaves Also called: balsam spruce