Q.Why Is There White Powder On My Black Diamond Crepe Myrtle?
My tree is about 2 years old. Last fall it had a red bloom on it. I am very careful with weeds and I mulch it with pine park. Could the pine park be causing the problem?

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on May 22, 2022
It likely is powdery mildew. Here is how to treat it:
https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm
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