Q.white powder on shrubs
My ninebark shrubs have developed a white powder on some of the leaves. What is it and what should I do about it?
Downtoearthdigs
Answered on June 29, 2016
This is likely Powdery Mildew.
Here is a link that will help you.
https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm
https://www.gardeningknowhow.com/ornamental/shrubs/ninebark/growing-ninebark-shrubs.htm
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