Bark beetles can destroy spruce forests by converting the trees' defences into even more toxic substances, scientists ...

Bark beetles moving between trees routinely carry two fungi that are responsible for the Dutch elm tree disease outbreak.

Spruce bark beetles don’t just tolerate their host tree’s chemical defenses—they actively reshape them into stronger ...

Spruce bark is rich in phenolic compounds that protect trees from pathogenic fungi. A research team at the Max Planck Institute for Chemical Ecology in Jena has investigated how these plant defenses ...

Learn more about the chemical arms race between a fungus, a tree, and a beetle.

The list of diseases attacking trees in the Pacific Northwest grows every year. A pathogen new to Pierce County brings an added concern: It can injure people. A research project using citizen ...

As Colorado experiences its signature whiplash weather, arborists are warning that stressed trees are more vulnerable to pests and diseases. Peel back the bark, and you may find a predator in your ...

The blackish trunks on the crapemyrtles around town are caused by an insect known as crapemyrtle bark scale. It doesn’t kill the trees, but it does make them unsightly and less vigorous. This scale is ...