Ash dieback disease
Ash dieback is a serious disease of ash trees caused by the fungus Chalara Fraxinea. The disease causes leaf loss and crown dieback in affected trees and it can lead to tree death.
Currently the advice is that mature trees should not be removed, as they are valuable to wildlife, take longer to die and can help us learn more about genetic strains that might be resistant to the disease. Infection does not occur directly from tree to tree.
The disease can be spread from spores from the fungi attached to leaves and leaf litter, spores can also be spread by wind and rain.
Page last updated: 22 August 2018