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Powdery mildew? #871329

Asked June 03, 2024, 2:27 PM EDT

Hello. I’m noticing what I think is powdery mildew on my Beebalm. I usually don’t see that until the fall. Is it because of all the rain we’ve had? The plant is not crowded. should I treat this? Thank you.

Ramsey County Minnesota

Expert Response

All the rain is probably the cause. The link has some suggestions for managing it.
https://www.torontomastergardeners.ca/askagardener/powdery-mildew-on-bee-balm/

Evelyn Locke, MN Master Gardener, Tree Care Advisor, Volunteer Replied June 03, 2024, 4:44 PM EDT

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