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weigela with powdery substance

My weigela bush has white powdery substance on some of its branches. I am trimming my well-established weigela bushes after their spring bloom and I noticed this year that the backside of the bushes (next to my front porch) have a white powdery substance on some of the branches. What is it and what can I do to take care of it?


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1 Comment To "weigela with powdery substance"

#1 Comment By Downtoearthdigs On 07/04/2016 @ 11:13 pm

Your plant has Powdery Mildew. You can use Neem Oil to treat.

Here is a link with more information.

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[1] : https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm

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