blue spruce
noun
1.
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
1880-85,
Americanism
Examples from the web for
blue spruce
Caution: dormant oil may cause a reduction of blue color when applied to
blue spruce
.
British Dictionary definitions for
blue spruce
blue spruce
noun
1.
a spruce tree,
Picea pungens glauca
, native to the Rocky Mountains of North America, having blue-green needle-like leaves
Also called
balsam spruce