Hydrangea - Knowledgebase Question

Sabattus, Ma
Avatar for aphogee38
Question by aphogee38
July 22, 2009
I have 3 Hydrangea plants and have noticed on 2 of them that they have brownish red spots on the leaves. Can you tell me what it may be and what I can do to fix the situation.

Answer from NGA
July 22, 2009
Leaf spots have many causes. It could indicate a disease or it could be a result of cultural practices. Without seeing the problem, I really can't diagnose it. I would suggest you pinch off the affected leaves. When new leaves appear, carefully inspect them. If they look healthy and do not develop spots, the original problem was cultural in nature. If spots appear on the new leaves, you're dealing with either a fungal or bacterial disease. Again, its difficult to diagnose without seeing it first hand so Im at a loss to suggest a control strategy. You might want to put one of the affected leaves into a plastic baggie and take it to your local nursery. Someone there can inspect the leaf and recommend a control strategy. Best wishes with your hydrangea.

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