Colorado Blue Spruce:
The Colorado Blue Spruce, was adopted as the official state tree on March 7, 1939, by a resolution of the General Assembly. The Colorado Blue Spruce was first discovered on Pikes Peak in 1862 and named by botanist C.C. Parry. This tree is known for its stately, majestic, symmetrical form and its beautiful silver-blue color.
In Colorado, it grows in small, scattered groves or singly among ponderosa pine, Douglas fir, alpine fir and Englemann spruce. In the northern parts of its range it grows at the 6,000 to 9,000 feet elevation while in the southern parts of its range at 8,000 to 11,000 feet. Its color ranges from green to blue to silver, and is sometimes called the silver spruce.
Colorado school children voted on Arbor Day in 1892 to name the blue spruce as the state tree, however it was not until 1939 that the Colorado Blue Spruce was officially designated.
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Courtesy of State of Colorado