Powdery mildew

By Donna Tatting, Chisago County Master Gardener We’ve recently been getting calls about plant decline from a white powdery film on the leaves of curcubit plants like squash and cucumber. The culprit here is a fungus called Podosphaera xanthii or more commonly known as Powdery Mildew. Powdery mildew infects all cucurbits, including muskmelons, squash, cucumbers, gourds, […]

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