Add Yahoo as a preferred source to see more of our stories on Google. A western pine beetle rests on a sap mound on a pine tree. - Charles Wollertz/Getty Images A thriving pine tree is a thing of ...

Are you seeing tiny holes, oozing sap, and thinning crowns on your beautiful weeping willow trees and mighty maples? Don't be too quick to pin it on old age. They could be signs of a much bigger ...

Emerald ash borers can kill ash trees in a short period, making identification of infestation and immediate treatment necessary to stop them.

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study from the University of Eastern Finland shows. Led by Dr Samuli Junttila, ...

Balsam woolly adelgid threatens native fir trees and the state’s Christmas tree industry as it spreads to a fifth Michigan ...

Q: I have been cutting off the dead branches on borer-infested trees. Should I burn or dispose of these dead branches? A: Flat-headed borers can get in the sunburned limbs and young trunks of peach, ...

Bark beetle-infested spruce trees begin to dry out already before any visible signs of tree mortality appear, a recent study shows. Bark beetle-infested spruce trees begin to dry out already before ...