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Observatree is a Constant in 2020

We could say that this year has been unusual, and we had to adapt to new ways. However, nothing has stopped Observatree volunteers keeping their eyes open and reporting pests and diseases to the Tree Health Diagnostic and Advisory Service (THDAS).

Ana Perez-Sierra • 11 Feb 2021
Blog

Host of the month - Oak

Matt Parratt discusses Oak (Quercus species) and Acute oak decline.

Matt Parratt • 20 Mar 2025
Blog

Host of the month - Plane

This month Matt Parratt delves into the world of Plane trees, Plane lace bugs and Canker stain of plane (formerly known as 'Plane wilt').

Matt Parratt • 21 Aug 2025
Sweet chestnut blight symptoms factsheet

External link
Video

Induction Two: Symptoms of Ill-Health and Site Surveys Recording [2023]

Induction Two introduces the signs and symptoms we look out for in Observatree, and introduces the general site survey method. Presented by Rebecca Gosling, Woodland Trust and Matt Parratt, Forest Research.

01:24:14
Step 5 - Trunk and root collar signs and symptoms

Video • 00:12:18
Acute oak decline symptoms

Video • 00:02:57
Step 4 - Crown signs and symptoms

Video • 00:09:29
Blog

Protecting trees, woods and forests - we couldn’t have done it without you!

Peter Crow, Observatree’s project manager, concludes our 10 years of Observatree celebrations with a look at how citizen scientists help protect trees, woods and forests.

Peter Crow • 05 Dec 2023
Blog

2018 volunteer training days – a summary

We held 11 events across England, Wales, and Scotland from the end of May to the beginning of July.

Charlotte Armitage • 15 Aug 2018