Blue Spruce Tree

By November 26, 2017Articles

Blue Spruce Tree

By Teo Spengler You are the proud owner of a beautiful Colorado blue spruce (Picea pungens glauca). Suddenly you notice that the blue spruce is turning green. Naturally you are perplexed. To understand why blue spruce turns green, read on. We’ll also give you tips for keeping a blue spruce tree blue. About Green Needles on a Blue Spruce Don’t be surprised if you see green needles on a blue spruce tree. They may be perfectly natural. The blue color of blue spruce needles is caused by epicuticular waxes on the needles that reflect specific wavelengths of light. The more wax on a needle, the bluer it is. But neither the amount of wax nor the blue color is uniform across the species. Some trees can grow decisively blue needles, but others of the same type have green or blue-green needles. In fact, another common name for the tree is

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