powdery mildew

Question

If my perennials have powdery mildew now as they are dying back, does that mean they will have powdery mildew when they come up next year?

Answer 1

It is very likely that the Powdery Mildew will occur, due to growing conditions or plant type.
This article will help you with more information.

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