Chalara dieback of ash is a serious disease of ash trees caused by a fungus called Hymenoscyphus fraxineus. The disease causes leaf loss and crown dieback in affected trees, and is usually fatal. It has caused widespread damage to ash populations across Europe, and was first discovered in the UK in a Buckinghamshire nursery in February 2012.
- More information about Chalara ash dieback (including a map of confirmed findings and information about identifying symptoms)
- Assessment of potential impacts in Scotland (PDF 1.9MB)
- Chalara action plan for Scotland
- Management of Native Ash in Scotland