Grass and vegetation against the trunk of a stone fruit tree provides a humid and secluded place for female borer moths to lay their eggs. Grass against a trunk also increases the likelihood of string ...

Adult spruce bark beetles in their galleries in the bark of a Norway spruce tree. The beetle in the middle is infected with the fungus Beauveria bassiana. Spruce bark is rich in phenolic compounds ...

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 ...

A newly established insect species is contributing to the spread of Dutch elm disease in Edmonton, where officials have confirmed 17 cases of the tree-killing illness so far this year. Dutch elm ...