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 ...
A: Those spots are due to Cercospora leaf spot, a fungus. Since the hydrangea will lose its leaves soon anyways, don’t worry too much now. Once they fall, rake all the leaves out from under the plant ...
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