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.

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 ...

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 ...

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 ...

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 ...

When a tree is carved into, this protective layer is broken, leaving an open wound, similar to us getting a cut on our skin. This wound leaves open the possibility of diseases or pests entering ...

The fungus’s rhizomorphs—black, ropy, root-like growths—can snake through the soil for many meters, sniffing for vulnerable trees. Once the fungus finds a suitable host—just about any tree ...

The aspen bracket fungus (Phellinus tremulae) is host-specific to aspen trees, causing heart rot in the trunks and producing large distinctive brackets that can persist for years.

The Kebler Pass aspen stand covers the equivalent of just over 100 football fields, with over 47,000 aspen trees, populus tremuloides, connected by a single, subterranean root system called a rhizome.

And don’t carve into the aspen trees. “A tree’s bark is like your skin. Carving into a live tree can cause infections and access for insect and fungus to enter a healthy stem,” Child said.

Aspen trees, in particular, are known for their resilience, Mock said. They’re a “very disturbance-oriented species,” in that they regenerate well after fires or after otherwise being felled ...

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.