This is a fungal disease called Peony wilt, a form of Botrytis or grey mould. Remove any infected parts of the plant, rake up any dead or dying leaves and dispose of them (NOT in the compost bin). Spraying the plant and surrounding soil with Copper Mixture from Vitax or Uncle Tom's Rose Tonic, may also help to give some control.
Gardening Expert: |
If you can't find what you are looking for on the website then you can ask one of our experts. To get in touch with us Click Here
We will try to get back to you with an answer as soon as we can.
Did you find this answer useful? Subscribe to our newsletter for gardeing news, projects, special offers and competitions.
RHS Garden, Wisley
Woking, United Kingdom
Medellin Botanical Garden
Medellin, Columbia
The New York Botanical Garden
New York, United States
Shinjuku Gyoen National Garden
Tokyo, Japan
RHS Harlow Carr
Harrogate, United Kingdom
Royal Botanic Gardens Victoria
Melbourne, Australia