Keep your red-tipped photinias from “blighting-out” by starting a spring fungicide application program for Entomosporium leaf spot. This disease, also referred to as photinia leaf spot, is the No. 1 ...

Are you dealing with Septoria brown spot in your soybean fields? You already know this and other common foliar fungal diseases wreak havoc on soybean crops, but you might not know how to start ...

BROOKINGS, S.D. - Moderate levels of some wheat leaf diseases are developing in South Dakota due to the rains the state has received this spring. "The most notable diseases are powdery mildew, stripe ...

Question. A ligustrum tree near the entrance to our home has brown spots on the leaves even though it gets needed fertilizer. What is the cause and what should we do? Answer. Fertilizer applied three ...

Gray leaf spot of corn is caused by the fungus Cercospora zeae-maydis. The fungus is now widespread in Indiana and the Eastern Corn Belt (Midwest). Weather strongly influences development of gray leaf ...

Q: I was trimming some of my Aphrodite sweetshrub bushes and found a weird growth on them (see reader's photos). I was trimming them back anyway, so I cut those branches off. Should I spray something?

Fall may be in the air, but gardening season is still happening, and you may have questions. For answers, turn to Ask an Expert, an online question-and-answer tool from Oregon State University’s ...

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: Sections of my St. Augustinegrass lawn are looking bad. I’m seeing spots on individual blades with some blades withering up and dying. Is this a fungus? A: What you’ve described sounds like gray ...