A debilitating hoof disease affecting elk herds across the Pacific Northwest appears to be driven not by a single pathogen ...

Deep freezes in 2023 and 2024 provided relief for some of Maine’s most preyed-on tree species. Will that continue in 2026?

Not all trees drop their leaves in the fall. Even in the height of winter, a curious number of oak and beech trees refuse to ...

Massive blankets of snow and ice are expected in parts of the US this weekend, with frosty conditions seen as far south as ...

Some trees and shrubs have a bad reputation for being susceptible to diseases: lilacs to powdery mildew, junipers to juniper ...

“Insect herbivores have long been known to accumulate plant defense metabolites from their diet as defenses against their own ...

The emerald ash borer is an invasive beetle wreaking havoc on America's ash trees. We explain how it got here and how it is being tackled.

Lichens survive in a very wide range of habitats worldwide. Amazingly, more than 400 species can be found in Maryland.

Winter is beautiful in its own pale ways, but when lush, leafy trees suddenly stand bare and stark against gray skies, an ...

County farmers will plant thousands of trees as part of their work to boost biodiversity, support species and tackle the ...

Japanese maple trees can be pruned almost anytime of year, but save major pruning for winter when the tree is dormant. Here's ...

Exploding trees? Extreme cold snaps in Chicago can cause trees to crack and burst from freezing stress. Tree experts explain ...