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 ...

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 ...

Understanding Septoria Leaf Spot. Do you have brown or black spots on your tomato leaves? It could be septoria leaf spot.

Black spots on tomato leaves are usually caused by fungal diseases like Septoria leaf spot or early blight, which thrive in warm, humid weather and can reduce yields or kill plants if untreated. Treat ...

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 ...