Ash dieback guide

Chalara dieback of ash is a serious disease of ash trees caused by a fungus called Chalara fraxinea (C. fraxinea). The disease causes leaf loss and crown dieback in affected trees, and it can lead to tree death.

The Forest Research agency, Forestry Commission, has produced a practical pictorial guide to recognising the main symptoms.  Suspected cases should be reported to: Forest Research Tree Health Diagnostic and Advisory Service, T: 01420 23000

View the Pictorial Guide to Chalara fraxinea
Ash Dieback Symptons