Aspen trees tend to have rough bark that ranges in color: greenish or yellowish, grey, white, or a mix. These trees are medium-sized, growing between 20 and 80 feet tall.The leaves are circular or ...

Wildlife and trees. Last year, when Aspen celebrated its 30th year as a Tree City, the featured tree was the aspen. This is a keystone species that helps others survive. Birds and bears love trees.

Aspen trees are found mainly in Northeastern United States, the Lake States, northward into Canada, and in the Rockies from New Mexico north into Alberta. In fact, ...

Study: Bison engineer Yellowstone’s Lamar Valley, trimming aspen trees Sept. 8, 2023 Updated Fri., Sept. 8, 2023 at 5:20 p.m. Bison graze in the Lamar Valley in this 2017 photo.

This enables the tree to absorb a small amount of the sun’s energy through photosynthesis in its trunk and branches – a feat ...