Ash dieback (Hymenoscyphus fraxineus)

What is Ash dieback?

Ash dieback, caused by the non-native fungus Hymenoscyphus fraxineus (formerly known as Chalara fraxinea), presents a significant threat to the UK's treescape on a scale not seen since Dutch Elm disease in the 1970s.

Ash is the third most common native tree in the UK, occurring in woodlands and other landscape settings, it has a high ecological value, cultural and historical significance within the county. Ash dieback is now found throughout the UK, eradication of the disease is not possible as this pathogen is an airborne fungus and is now considered endemic within the UK.

The council will be clear in its communications to members of the public, elected councillors and partnership organisations as to why it's carrying out Ash dieback related work on its managed land. We will constantly review the guidance around this disease to ensure work is in accordance with best practice guidance and up to date, based on information from a variety of sources.

Information for tree owners

Tree owners have a legal duty of care and must maintain their trees in a reasonably safe condition. We are only responsible for trees growing on council property.

In almost all cases, trees that are next to roads and public rights of way are the responsibility of the neighbouring landowner. The tree owner is responsible for the cost of this work.

For most landowners, the first step will be to contact a tree surgeon. They will be able to provide quotes for the work required and advice on what traffic management will be needed while the work is carried out. 

Information for woodland owners

Specific guidance on managing woodland containing ash is available in Forestry Commission Operations Note 46.

Further reading