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Do we still need to record and report Chalara dieback of Ash?

Matt Parratt discusses the prevalence of Chalara dieback of Ash and offers some guidance on reporting this widespread disease.

Matt Parratt • 27 Nov 2025
An Introduction to recording the location of a tree

Video • 00:12:21
Step 2 - Site and setting

Video • 00:11:49
Plane wilt worldwide distribution map

External link
Laypersons Report English

PDF • 5.59 MB
Pest and disease calendar

PDF • 1.36 MB
Great spruce bark beetle poster

PDF • 4.00 MB
Pine processionary moth poster

PDF • 4.41 MB
Blog

How does Observatree fit into tree disease?

Observatree project is asking citizens to help in protecting our trees from new pests and diseases, but why is this an issue and why is citizen science part of the answer?

Joan Webber • 06 May 2015
Resource Library

Resource Library

Take a look through our pest and disease resources