Peony Bushes

Question

My peony bushes have ‘rust spots’ on the leaves and stems. What causes this, and how do I prevent and get rid of this?

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