Peony Bugs/Mites??

Question

I have peonies that have some brown and or yellow spots on some of the leaves. I can tell it’s killing them. What do you suggest that I do?

Answer 1

It's actually most likely a fungus called rust. This article will help you:
https://www.gardeningknowhow.com/plant-problems/disease/learn-about-plant-rust-disease-and-rust-treatment.htm