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Oak lace bug on a leaf

Video • 00:00:35
Laypersons Report French

PDF • 3.26 MB
Phytophthora ramorum poster

PDF • 803 KB
Bronze birch borer poster

PDF • 3.50 MB
Blog

Ash Dieback in the National Trust

Ash is one of our most important tree species both ecologically and culturally, and is generally considered to be the third most common tree in British woods, comprising around 12% of woodland tree cover.

Luke Barley • 23 Aug 2021
Blog

A record-breaking 2019 and new developments for 2020

2019 was a record-breaking year for the project, with almost 4400 tree health reports submitted by our volunteers.

Peter Crow • 20 Jan 2020
Blog

Observatree show on the road!

Two weeks, two events, two firsts and one joined up message.

Peter Crow • 11 Jun 2019
Blog

Oak powdery mildew - what's all the fuss?

Find out more about what causes powder to cover oak leaves in late summer.

Elsa Field • 16 Jul 2017
Blog

Negative data is good!

One of the key messages we give Observatree volunteers is that you don’t have to find something to make a survey worthwhile or valuable.

Ellie Barham • 08 Mar 2017
Oak processionary moth - Government webpage

External link