Q: Can you tell what caused a big patch of bark to fall off the bottom of my oak tree? No marks or tunnels at all; bark looks like it just fell off suddenly. Dan Hunt, email A: My bet would be ...

Our often-wet springs bring with them the perfect conditions for many plant diseases. While moist weather can create conditions for diseases on many plants, sick trees in the landscape tend to draw ...

Bark beetles may use receptors in their antennae to detect and feast on fungus-infected trees. The Eurasian spruce bark beetle (Ips typographus) – found in Europe, Asia and some parts of Africa – ...

Q: We have a problem with our lone Japanese Maple tree in our front flower bed. We think it has a fungus, and we're not really sure if we can do anything to save it. We noticed it a couple of months ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Conifer forests across Europe are under siege from a tiny threat ...

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

Dear Neil: I recently discovered a large kind of shelf-shaped growth at the base of one of my large pecan trees and another, smaller one growing on the opposite side of the tree. The tree was pruned ...

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 ...

Eastern black walnut (Juglans nigra) is one of the most beloved native trees in the Midwest. Its nuts are eaten by both people and wildlife, and its wood is a favorite for making high-quality ...

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

The gardening season is rolling and if you’ve got questions, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service. OSU Extension faculty and ...