If your houseplant looks worse for wear but you can't identify the cause, it may be suffering from root rot. This common plant ailment can develop unseen beneath the soil’s surface, weakening your ...

I have a 20-year-old azalea that has some dead branches in the center of it. Can I renew it by cutting it back severely? Dead branches in a moisture-sensitive plant make me nervous this year. It's ...

“Root pruning” sounds like such a brutal way to treat a plant. Yet it’s a periodic necessity once any potted plant has grown as large as you want it to. Potted plants — like other plants — grow, and ...

Gardening season has been put to bed for winter, but you may still have questions. For answers, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension ...

Q: We have alkaline soil and heavy shade. Cotton root rot has become a real problem. What can I plant beneath our live oaks that will also be highly resistant or immune to the root rot? A: Cotton root ...

We have a relatively young satsuma tangerine tree that is loaded with fruit, and we’d like to know what we did right this year. Last year’s yield was nothing compared to this year’s. What could have ...

If you have a yard full of trees (don’t worry about palms because they are not a host for this fungus) and shrubs, be on the lookout for the mushrooms of Armillaria root rot. It is a fungus that can ...