Search Observatree
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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
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Oak processionary moth - Government webpage
External link
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Video
Induction Two: Tree Health Surveying
Our second induction webinar for 2022, tree health surveying covers site selection, tree health data, and survey forms. A fundamental introduction to conducting tree health surveys for Observatree. Presented by Rebecca Gosling, Woodland Trust.
01:08:23
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Horse chestnut leaf miner field identification guide
PDF • 12.87 MB
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Oak lace bug detailed information
External link
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Blog
Pine Processionary Moth: Assessing the threat
PPM are spreading further north across Europe but are not established in the UK. We discuss the signs and symptoms to look out for.
Fritha West • 31 Mar 2022
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Blog
Oak Processionary Moth
Oak processionary moth (OPM) caterpillars are priority pests which target trees in the Quercus genus. They were accidentally introduced into England in 2005, but thanks to strict survey and control programme, they have not become established outside of the South of England.
Fritha West • 18 Apr 2022
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Oriental chestnut gall wasp 2015 outbreak case study
Video • 00:15:47
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Dothistroma needle blight training video
Video • 00:06:40
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Blog
Beech Leaf Disease
A new disease of beech trees (Fagus spp.) named ‘Beech leaf disease’ (BLD) is spreading through forest areas in eastern USA and Canada. Charles Lane and Tom Prior discuss the threat posed to UK woods.
Tom Prior • 14 Jul 2022