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Hey friends, how do you fix powdery mildew? It’s running rampant on… | Pests, diseases and problems | Planta 커뮤니티

Elle

Hey friends, how do you fix powdery mildew? It’s running rampant on my peonies with all this Iowan rain.

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  1. Cherrybergher

    Outdoors is challenging. I have only had success removing all affected leaves and parts of the plants (cleaning the tool you use between each cut to avoid spreading the mildew) then spraying the plant and/or wiping the rest of the plant with a mixture of baking soda and water. If you wipe the leaves be careful to use a different piece of paper towel with each leaf as to not spread it more. Alternatively dip the paper towel back in the bucket of baking soda and water between each leaf you wipe. It’s tedious but worked for me with diligence. However I am interested in others advice on easier methods.

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    • Elle

      That does seem like a lot of work but I’m glad it worked for you. I have read it usually doesn’t stick around the next year. I was thinking I would just trim it low and hope for the best next year. I tried potassium bicarbonate but that was unsuccessful.

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    • Cherrybergher

      Yes I suspect next year if drier it will rectify itself if cut back. Good point.

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