Endless Summer Hydrangeas with black spots - Knowledgebase Question

Atlanta, Ge
Question by kaysmarr
September 24, 2010
My Endless Summer Hydrangeas look terrible. They have black spots all over the leaves. Since it is late September, how should I treat them?


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Answer from NGA
September 24, 2010

0

What you describe sounds like Cercospora leaf spot. Since the appearance of symptoms is usually delayed until late summer to early fall, protective fungicide sprays are rarely needed at this time of year. I'd prune away all the infected branches and foliage and remove it from the garden. Next year, if you see leaf spots, apply a fungicide to stop the disease in its tracks.

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