Will It Harm Peonies If You Cut Them Down Before The First Frost

Question

They have a fungus and I need to do fall cleanup

Answer 1

It is not, usually, the best course of action for the plant. However, in the case of disease- You will want to treat with a fungicide and trim out any heavily infected growth.

Here are some articles that will help:

https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm

https://www.gardeningknowhow.com/ornamental/flowers/peony/peony-pruning.htm