Search Observatree
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Elm zigzag sawfly detailed information
External link
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Pine processionary moth training video
Video • 00:09:29
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Video
Seasonal Survey Highlights Autumn
A short introduction to the hosts of the month for autumn.
00:18:14
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Resource Library
Pest & Disease Resources
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Video
Tree Alert Demo Webinar
Learn about how to use the new Tree Alert system.
00:38:29
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Blog
Observatree: Where it all began
Jane Barbrook, Plant Health & Seeds Inspectorate (Animal & Plant Health Agency), looks back at the start of the Observatree project and considers its ongoing success.
Jane Barbrook • 05 Oct 2023
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Pests and diseases
Sirococcus tsugae
Found in several UK locations on cedar, Sirococcus tsugae causes characteristic pink dead needles and can eventually kill shoots and branches.
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Video
Host of the Month Plane - September 2024
Host of the Month Plane - September 2024
00:50:46
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Pests and diseases
Beech Leaf Disease
Beech leaf disease is a newly described disease causing discolouration of beech leaves.
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Host of the Month: Birch and Bronze Birch Borer - March 2025
PDF • 1.25 MB