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Waht is this white coating on my outdoor plant? #682025

Asked February 27, 2021, 4:08 PM EST

Hi, I have a large vine like plant with 3-4 inch tear-drop shaped leaves that has developed a white coating. What is this please, and how do i treat it?

Lane County Oregon

Expert Response

Powdery mildew, a fungus. There are many possible treatments, but prevention is the best one. See these URLs for details.

https://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/powdery-mildew/powdery-mildew-indoors.aspx

https://extension.psu.edu/powdery-mildew

Patricia Patterson Replied March 01, 2021, 12:25 PM EST

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