Colorado spruce (Picea pungens) is an evergreen pyramidal tree with horizontal branches. The tree is native the western Rocky Mountains. The needles are about 1.25 in. long and have a gray-green color. Variants almost always have a silvery-blue or intense blue foliage (see Colorado blue spruce). The needles are very stiff and sharp and therefore hard to handle with bare hands. Trees generally grow to 50 feet with a canopy spread of 20 feet. Species in the wild can grow much larger. The tree has pale-green cones when immature, becoming brown or tan with maturity, and up to 3 inches long. The Colorado spruce is often used as a Christmas tree or as an ornamental garden tree, particularly in the eastern United States and Europe. It is the official state tree of both Colorado and Utah.