Peony Plant
Q.

Powdery mildew on peonies

Zone Zone 5/6 | radine added on September 7, 2015 | Answered

My peony bushes developed a white powdery substance, which spread like wildfire. I cut them back to the ground, which I usually do in the fall anyway, hoping that I would stop whatever it was. A little Googling reveals that they have powdery mildew. Will cutting them back for the year be enough or do I need to treat the remaining stumps? I live in New Jersey, the plants are in full sun all day.

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on September 9, 2015

Treating the pruned plants for the Powdery Mildew is a good idea.
Dispose of the trimmings, do not put in your compost.

Here are some links to help you.
https://www.gardeningknowhow.com/ornamental/flowers/peony/powdery-mildew-peonies.htm

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

00
Was this answer useful?

Log in or sign up to help answer this question.
Did you find this helpful? Share it with your friends!

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.

Looking for more?
here are more questions about...
Peony Plant
Join Us - Sign up to get all the latest gardening tips!

Do you know a lot about gardening?
Become a GKH Gardening Expert

Learn More