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Blog
Host of the month - Maple
This month Matt Parratt looks at Maples (Sapindaceae family), Asian longhorn beetle and Citrus longhorn beetle.
Matt Parratt • 19 Sep 2024
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Blog
Host of the month - Ash
Matt Parratt highlights Common ash (Fraxinus excelsior), the well-known ash dieback disease and its associated pest, Emerald ash borer.
Matt Parratt • 14 Nov 2024
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Blog
Host of the month - Pine
Matt Parratt discusses the different types of Pine (Pinus) and Dothistroma needle blight (DNB).
Matt Parratt • 15 Jul 2024
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Blog
TreeAlert Demystified: What happens when you submit a report?
A question that the Tree Health Diagnostic and Advisory Service team are often asked is, ‘What happens when I send in a TreeAlert enquiry, how does it all work?’ Here, Chris Berman, entomology diagnostician at Forest Research, pulls back the curtain on what goes on behind the scenes!
Chris Berman • 23 Jan 2025
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Pests and diseases
Agrilus fleischeri
Native to Asia, this beetle can infest poplar and willow trees with the beetles emerging from spring onwards.
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Pests and diseases
Oriental Chestnut Gall Wasp
The oriental chestnut gall wasp larvae cause galls to develop on the buds, leaves and leaf stalks of sweet chestnut trees making them vulnerable to other pests and diseases.
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Ash Dieback detailed information
External link
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Blog
Observatree Visit to Shibden Hall Park
Charles Lane reflects on a recent Observatree visit to Shibden Hall Park.
Charles Lane • 29 May 2025
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Blog
Plane Lace Bug: A Delicate Micro Menace Concealed in the City
On the 25th of July 2024, a public observation was made on iNaturalist of an interesting tiny bug found on someone’s bag in central London. A scientist from Defra spotted the report and gathered more information from the informer, believing it to be a specimen of the plane lace bug (Corythucha ciliata) due to its lace-like appearance and the location of the find in central London, where London plane trees abound.
Amirah Nigoumi • 30 Apr 2025
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Blog
Host of the month - Elm
For this month's host tree of interest, Matt Parratt focusses on Elm (Ulmus species) and Elm zigzag sawfly (Aproceros leucopoda).
Matt Parratt • 15 May 2025