Learn how to identify the aspen tree in the forest, as well as facts about the tree's habitat, ... 32 Common Tree Diseases. Use Needles to Identify Common North American Coniferous Trees.

Quaking or trembling aspen is a short-lived (50 years), fast-growing, medium-sized tree. It seldom exceeds 60 feet in height and 20 inches in diameter. Although it has some good ornamental ...

Discover the major common tree diseases in the United States. Armillaria attacks both hardwoods and softwoods and causes either yellowing leaves or browning needles. Wood that is decaying from ...

Aspen aren't the only trees in trouble in the Rockies. The needles of many spruce and pine trees in Colorado are tinged with red, a sign of bark beetle infestation. The outbreak began in 1996 and ...

EAGLE COUNTY ” While mountain pine beetles continue to ravage large swaths of forests in the West, the region’s aspen groves are falling prey to an unknown disease that could wipe out 10 ...

The city of Aspen announced Tuesday an increase in early leaf drop of some cottonwood trees due to a surge in fungal diseases. The primary fungus causing damage is Septoria, which is a common foliar ...

SALT LAKE CITY — Recent diebacks of aspen trees in the U.S. West may end up increasing the risk posed by a lethal human pathogen, a new study suggests. A tree-killing syndrome called sudden ...

FLAGSTAFF, Ariz. (AP) — In a story Oct. 3 about a disease affecting aspen trees, The Associated Press erroneously reported the names of a forest entomologist and an eastern Arizona forest. The ...

In a story Oct. 3 about a disease affecting aspen trees, The Associated Press erroneously reported the names of a forest entomologist and an eastern Arizona forest. The entomologist is John Anhold ...

FLAGSTAFF, Ariz. (AP) — In a story Oct. 3 about a disease affecting aspen trees, The Associated Press erroneously reported the names of a forest entomologist and an eastern Arizona forest. The ...

FLAGSTAFF, Ariz. (AP) — In a story Oct. 3 about a disease affecting aspen trees, The Associated Press erroneously reported the names of a forest entomologist and an eastern Arizona forest. The ...