It was a reminder of the phenomenon found to be sweeping Colorado’s favorite tree of fall. Around the turn of this century, scientists starting tracking what became called sudden aspen decline.

Update: Sept. 18, 2023: Aspen in Rocky Mountain National Park should begin showing more color around Sept. 20 with peak viewing over the ensuing week. The San Juan National Forest is reporting ...

Aspen leaves turn golden yellow, orange and red in the fall, and they account for 20% of the state's forests, so Coloradans can expect to see plenty of those colors as fall foliage peaks this season.

This is our celebrated tree of fall, the quaking aspen so named for those leaves that flicker in the breeze, twinkle in the sun and stir our souls. Maybe you didn't know that about the name ...

In this episode of ID That Tree, Purdue Extension forester Lenny Farlee introduces the Quaking Aspen. This species is found in the North Woods of Northern Wisconsin, Northern Indiana, and the Upper ...