The original Christmas tree was a Spruce, which is distinguished by its cone shape and whorled branches. The needles of a Spruce are attached singly to the branches rather than in bunches, in a spiral ...

Blue spruce (Picea pungens f. glauca), also called Colorado blue spruce, is a beautiful tree with blue-gray needles. Being colorful and relatively drought tolerant, it’s a favorite of many homeowners ...