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.

FLAGSTAFF — Beneath the scenic yellow and red leaves of soaring aspen trees in the Kachina Wilderness, forest ecologist Mike Stoddard is looking down. His concern isn’t the brilliant fall ...

Aspen trees are particularly vulnerable because they are linked together underground, so carving into one tree can potentially damage multiple trees. Additionally, aspen bark can photosynthesize ...

Change is happening everywhere, but it’s how living things adapt that counts — a perfect example of this is aspen forests. A new decade-long study by University of Wisconsin researchers reveals how ...

Aspen trees don’t have the same amount of salicylates as, for example, white willow, but the chemical is still present. Though used for hundreds of years, ...

But the aspen trees on lower elevations of the San Francisco Peaks are experiencing a bottleneck effect in their growth, according to the NAU researchers.

Summer is not the time for leaf peeping in Colorado, but it might be the time to consider aspen trees. Populus, billed as the country’s first carbon-positive hotel, is set to open soon at 240 ...

Plan your fall leaf-peeping adventure in Colorado beyond the aspen. Discover what trees and shrubs produce reds and oranges, including gambel oak, cottonwoods, chokecherry bushes, Rocky Mountain ...

The Trump administration plans to rescind a nearly quarter-century-old rule that blocked logging on national forest lands.

A late March ice storm hit 12 counties in northern Michigan, downing or damaging three million acres of trees. The state's ...

Aspen trees can thrive in a variety of conditions including sandy soil, gravel, dry grasslands and elevations from 6,500 feet to 11,500 feet. But one thing they cannot go without is abundant sunshine.