The Q&A Archives: Petunias

Question: My petunias have small round black things all over their leaves. Are these bugs or something else? What needs to be done?

Answer: Small black things could be insects (black bean aphids, flea beetles, etc.) or they could be a sign of disease. Without knowing which, it's difficult to suggest a control measure. I'd first try hosing them off with a strong stream of water. If they return, collect a few in a plastic baggie and take them to your local Master Gardener clinic or a well staffed nursery for identification and control suggestions. Best wishes with your petunias.

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