Picea pungens (Blue spruce): Leaves
		Foliage color varies according to individual and habitat, and can be silvery-white or even dull green, but is most often blue-green. Grafting limits the chances of undesired color variations. The sharp-pointed, stiff needles are 0.75 to 1.25 inches long, 4-sided and incurved, with white stomatic lines on each side. The name "pungens" alludes to the sharp, resinous odor of crushed leaves and perhaps the acidic taste when chewed.