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 ...

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 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 ...

Your photo and description indicate Septoria leaf spot, which is very common on Rudbeckia and is prevalent in Illinois. The disease begins on lower leaves and progresses up the plant but does not ...

It’s a sign of the times: spots and dots appearing before our very eyes, seemingly overnight. No, it’s not your vision failing you, and there’s no need to clean your glasses. We’re dealing with ...

Orchids are among the most beautiful houseplants available, and they are not as difficult to care for as their prima donna reputation suggests. If your home environment can meet their basic care needs ...

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 ...