Question: Green mold has started to grow on the trunks of several different trees in my yard. Some of the trees have dead branches and I am wondering if the moss growth is slowly killing the trees?

If you take a close look at some of the more established trees in your landscape, you may notice something you cannot seem to describe – it may look to you like a kind of fungus on your tree trunk. Is ...

Q: Last winter’s cold almost killed my Chinese tallow tree. I had a tree service company remove all the dead wood three weeks ago. I’ve been removing the suckers from the base of the tree and from ...

Conditions are quite different today as I step into the early November woods for a walk. With the leaf drop and the not-yet snow cover, the forest is very open, and I see plenty of things that were ...

Spring has started with some good weather. Are you out gardening? Do you have questions? For answers, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension ...

Do you get slimy patches of something resembling dog vomit growing in your yard after heavy rain? Here's what it is and what to do about it.