Typical of all spruces, Colorado spruce has one needle attached to a peg (pulvini). The needles have varying degrees of a waxy, glaucous covering creating shades of green, gray-green or silvery blue. They are stiff, slightly curved and sharply pointed. Lightly touching the tips of the prickly needles with your hand will confirm the identity of this plant! Also notice the orange-brown glabrous stem which is another good identifying feature.
Karren Wcisel, TreeTopics.com
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Pinaceae, tree, conifer, cone, needle, evergreen, Picea pungens, Colorado spruce, blue spruce