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Powdery mildew question #874867

Asked June 26, 2024, 6:46 PM EDT

Hello, I'd like to ask if my plants (attached pictures) are infected with powdery mildew and how can I treat them? Thanks.

Dakota County Minnesota

Expert Response

We can't be sure what's affecting the plants by viewing the photos.  However, based upon what we can see, we think you may have diagnosed the problem correctly.

Powdery mildew is very common now.

The following publications discuss powdery mildew and how to manage it.

https://extension.umn.edu/plant-diseases/powdery-mildew-flower-garden

https://www.extension.purdue.edu/extmedia/bp/bp-5-w.pdf

An Ask Extension Expert Replied June 30, 2024, 10:17 PM EDT

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