Search Observatree
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Chalara dieback of ash - winter symptoms
Video • 00:01:35
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Chalara dieback of ash - Spring symptoms
Video • 00:02:28
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Chalara ash dieback poster
PDF • 721 KB
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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
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Blog
Host of the Month - Ash
Matt Parratt, Observatree Scientific Coordinator, looks at common ash, chalara ash dieback, and emerald ash borer
Matt Parratt • 04 Dec 2023
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Pests and diseases
Emerald Ash Borer
Native to Asia and Eastern Russia, the emerald ash borer is a threat to our already vulnerable ash trees.
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Pests and diseases
Chalara Dieback of Ash
A chronic fungal disease believed to have originated in Asia, now widespread across Europe.
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Chalara dieback of ash training video
Video • 00:08:10
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Blog
Chalara Dieback of Ash on my doorstep
Living in rural North Yorkshire, on the border with the East Riding, provides easy access to beautiful areas of the Wolds, Howardian Hills, Moors and coastal regions for country walks.
Charles Lane • 01 Jul 2015
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Chalara dieback of ash - Pest alert
External link