Colorado's bristlecones are shorter lived than those on the west coast. The oldest bristlecone in Colorado is 2,500 years old. Most live about 1,500 years near treeline at 11,000 to 12,000 feet. Bristlecones planted along the Front Range only live about 100 years. I have 3 bristlecones in my yard that are about 40 years old.
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