Tree Surveys

Oak Processionary Moth Monitoring

The Oak Processionary Moth Thaumetopoea processionea is a non-native species that has become established across Greater London and some surrounding counties since being accidently introduced in imported trees in 2005.The caterpillars live in large nests, and are covered in iritating hairs which can be blown in the wind. The pests are hazardous to human and animal health, and their presence can leave oak trees vulnerable to stress.

The Heath's tree team have been dealing with this issue and our volunteers assist them with the important taks of surveying oaks and identifying nests for subsequent removal. Results have been encouraging and we will continue the project in 2020. Learn about our tree team's work here and go here for further information on Oak Proccessionary Moth.


Veteran Tree Survey

Our oldest, and some of the most impressive trees have been surveyed in the past, but there never was a comprehensive ancient tree register. Working with the Heath's arboricultural team our volunteers launched a detailed survey to record various aspects of the ancient trees on the Heath in 2002.

A total of 790 trees were surveyed, recording a range of features including species, girth, estimated age, historical value and the biodiversity they support. Some of the oldest oaks were recorded at perhaps 400 years of age. The survey helped improve the future management of the veteran trees and their surroundings, and most importantly, helped plan for succeeding generations of woodland.