Search Observatree
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Blog
Host of the month - Elm
Matt Parratt reviews Elm (Ulmus species) and the Elm zigzag sawfly.
Matt Parratt • 16 May 2024
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FAQ
Observatree FAQs
Frequently asked questions about Observatree and tree health.
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Blog
Host of the month - Sweet chestnut
Matt Parratt discusses Sweet chestnut (Castanea sativa) and its associated pest: the Oriental chestnut gall wasp, and its associated disease: Sweet chestnut blight.
Matt Parratt • 17 Oct 2024
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Blog
Host of the month - Beech
Matt Parratt looks at Beech (Fagus sylvatica) and its associated Beech leaf disease.
Matt Parratt • 20 Jun 2024
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Blog
Host of the month - Cedar
This month Matt Parratt takes a look at Cedars and Sirococcus blight.
Matt Parratt • 17 Apr 2025
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Blog
The story so far: the difference we’ve made in five years
Ana Perez-Sierra, Head of Forest Research's Tree Health Diagnostic and Advisory Service, lets us know about the difference Observatree has made.
Ana Perez-Sierra • 11 Dec 2018
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Blog
Simulating a longhorn beetle outbreak
Find out about the creation of the longhorn beetle outbreak training trees, based at the Yorkshire Arboretum.
Ellie Barham • 14 Feb 2017
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Pests and diseases
Plane Wilt
Plane wilt is a fungal disease that affects plane trees. Usually fatal, plane wilt can kill trees within two to five years.
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Blog
New look for TreeAlert!
Lucy Turner, TreeAlert Coordinator, gives an overview of some of the latest improvements to the TreeAlert system.
Lucy Turner • 18 Jul 2023
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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