Q. In late spring, you wrote about canker on maple trees. The description fit the problem with our Norway maple perfectly. Our tree was planted by the builder about two years ago. We initially thought ...

Hard to believe, but fall is here. What's up in your garden? Got a question? Get answers from Ask an Expert, an online question-and-answer tool from Oregon State University's Extension Service. OSU ...

Q: I just removed a maple tree that had a bleeding canker. It has been slowly dying for the last few years. My question is before planting another tree in that area, do I need to treat the soil and if ...

When a branch falls or a tree dies, one common reason is a group of diseases with an especially ominous name: canker diseases. “Canker” comes from the same root as “cancer.” Like cancers, cankers can ...

Hypoxylon canker in trees is a scary-sounding thing, right? It is a fungal disease that is common on many hardwoods. An opportunistic fungus, Hypoxylon atropunctatum, causes it. Red oaks are more ...

“My red maple has leaves that are curling with black edges. Lots of leaves are falling and making a mess on my patio. We have not had this bad of a problem in past years. What is this and what can I ...