Peony Diseases

Garden Peonies (Paeonia spp.) have been used in Ohio landscapes for a long time. It's not unusual to find clumps of these non-natives growing where old homes once stood. However, this old group of perennial flowering plants has seen a resurgence in recent years.

Peony leaf blotch disease is caused by the fungus Graphiopsis chlorocephala (formerly Cladosporium paeoniae). The fungus produces diseases with different names depending on the symptoms.