Don’t panic if you see spots on your tree’s leaves or something strange on the bark. Get to work diagnosing the problem with this guide that features pictures of common tree diseases and pests that ...

Spruce bark beetles don’t just tolerate their host tree’s chemical defenses—they actively reshape them into stronger antifungal protections. These stolen defenses help shield the beetles from ...

Natural disturbance and increasingly invasive insects have outpaced logging as the biggest causes of tree death in all but one New England state. More trees are dying in Northeastern forests, and not ...

Scientists have planted American trees in China, Korea and elsewhere to attract hungry insects. Their hope is to identify the most damaging bugs before they cross the ocean. Scientists have planted ...