However, aspen also has the ability to send up new young shoots, or suckers, off the root system of an established tree, sometimes up to 30 metres away, if the tree is large.

An initiative to save one of Scotland's most endangered species of tree has been launched in the Cairngorms National Park.

"Our study highlights that without active management and restoration efforts, aspen stands are at risk of declining further, especially at lower elevations and more southerly exposed areas ...

Populus tremuloides, the quaking aspen of the North American continent, stands as one of the most easily recognized, most beautiful and most admired of all tree species. In order to help ...

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 ...