We have a problem with our aspen trees. Nearly all of them are sapping quite a bit and are also splitting down the sides. We live at 6,100 feet in Paonia. Last summer the leaves were mottled. Any ...

JACKSON - In Wyoming, state forester Bill Crapser said aspen stands, like those in other Western states, are declining as well. "It's partially because as aspen stands get older, conifers take over ...

For 30 years, Aspen has held the title of Tree City USA, one granted by the Arbor Day Foundation to communities that meet four requirements: The city must maintain a tree board or department, meaning ...

Richard L. Lindroth received funding from the Wisconsin Alumni Research Foundation, project 135G909 and from the U.S. Department of Agriculture McIntire-Stennis Program, grant WIS03003. Patricia C.

The record numbers of bison in Yellowstone National Park threaten the recovery of the park’s iconic quaking aspen, which scientists had hoped was on the mend, a study has found. The findings, ...