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Ash Tree Dieback (Chalara Fraxinea)

Ash Dieback is a disease caused by a fungus called Chalara Fraxinea which affects Ash trees. The disease causes leaf loss and crown dieback in affected trees and it may lead to tree death.

In North Hertfordshire

North Hertfordshire covers 145 square miles of the 634 square miles land area of Hertfordshire. The area is relatively heavily wooded. The predominant species are Ash, Sycamore, Beech and Hawthorn. NHDC maintains approximately 16,000 Ash trees across the district with the vast majority of these located in woodland, conservation areas, parks and on roadside verges.

What is the Council Doing?

Following advice from the Forestry Commission, the Council is taking the following actions within our service areas:

Trees in Woodlands and Highways - As the Ash Dieback Disease spores are dormant during the winter there is no chance of infection spreading until the growing season starts in the spring.

Parks and Open Spaces - Leaves from parks and open spaces that are collected are composted at a facility in North Hertfordshire. We will inspect any trees that are suspected of being infected and review this arrangement depending on the situation on a case by case basis.

Street Cleansing - Street Cleansing operations such as autumn leaf fall removal and daily cleansing schedules do remove a mixture of tree debris, including leaves from a number of different species including Ash. All material is currently sent to landfill through the disposal routes determined by Hertfordshire County Council.

What if I Suspect Ash Dieback?

Symptoms to look out for

Information on how to identify an Ash tree and the symptoms of Ash Dieback can be found on the Forestry Commission's website.

Reporting suspected cases

 Residents can help monitor the situation by reporting any suspected sightings of Ash Dieback online.

More information on tree health can be found on the Countryside Management Service's website.