How Do I Get Rid Of The White Powdery Stuff On My Rose Of Sharon Bush?

Question

The white stuff in at the base of the bush.

Answer 1

It likely is powdery mildew. These articles should help:

https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm

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