Gray leaf spot is a widespread fungal disease in corn, responsible for a 23-million-bushel yield loss in the U.S. in 2024. 1 The challenge with controlling gray leaf spot isn’t just deciding whether ...

Chuck H. from Larkfield asks: The Photinia shrubs I have planted alongside my back fence have developed these brown spots on the leaves. Some leaves have been falling, and it looks like its spreading ...

A reader recently asked what the brown spots are on their rhubarb. Leaf spots are commonly found on rhubarb plants. This is more of an aesthetic problem and won't severely damage the plant. Rhubarb is ...

Q: This happened to my Mexican plum last summer. What caused it, and what can I do to prevent it this year? A: At first glance I thought this had been caused by caterpillars, but then I decided to ...

Q. The magnolia in our backyard doesn’t seem to be thriving. The branches and leaves aren’t as thick and lush as they were a year or so ago. And when I looked closely I realized there are spots on ...