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 ...

A picture of leaves with leaf spot disease. - Boyloso/Shutterstock Have you noticed discolored spots or lesions on the leaves of your plants? This could be leaf spot disease, and it's wreaking havoc ...

Cercospora leaf spot (CLS), caused by the fungus Cercospora beticola, continues to challenge sugar beet production across global agricultural landscapes. The disease, which detrimentally affects ...

In just a decade, this unusual disease has spread from Ohio across the Northeast. Scientists are testing treatments, but answers come slowly. Backlit leaves of an American beech tree show dark bands, ...

Here's how to keep your hydrangea foliage looking green and healthy. In late summer or fall, Cercospora fungus causes brown spots on hydrangea leaves. The plant looks unsightly but usually recovers ...

Q: Our large gingko tree is dropping some odd fruits (which it has never had since it was planted) (see reader's photos). And the leaves are getting yellow spots on them and then falling off. We've ...

There are brown spots with purple edges on the leaves of my hydrangeas. They are still producing some small flowers and new growth. But new growth becomes spotted as it appears. Is there anything I ...

Agricultural Research Service scientists are leaving no stone—or rather, leaf—unturned in their search for new ways to counter the fungus that causes tar spot, a yield-robbing disease of field corn in ...

In late summer or fall, Cercospora fungus causes brown spots on hydrangea leaves. The plant looks unsightly but usually recovers from the disease. Drip irrigation, good air circulation, and removal of ...