What to look for
The beetle is metallic green and its larvae feed under the bark, producing winding S-shaped galleries and distinctive D-shaped exit holes around 3–4mm across. Crown dieback, bark splitting and heavy woodpecker activity on ash can all follow. These signs overlap with ash dieback, so a confident identification needs the galleries or exit holes, not just a thinning crown.
- Suspected sightings should be reported through the Forestry Commission TreeAlert service.
- Do not move ash timber, logs or firewood long distances if you suspect a problem.
- Clean boots, tools and vehicles between sites — the Keep It Clean principle applies to homeowners too.
Why biosecurity matters locally
Most new tree pests travel on plants, timber and machinery rather than by flying. Buying firewood locally, refusing unsourced imported logs and letting a contractor clean down between jobs all reduce the risk. Good site hygiene is now part of professional tree work, and it costs nothing for a homeowner to ask how it is managed.
How James David Forestry Ltd can help
James David Forestry Ltd works across Liverpool, Merseyside, Wirral, Ormskirk and Lancashire. We assess the actual tree, access and surroundings before recommending work. Clear photographs can be useful for initial guidance, but some questions need a site visit and we will not diagnose a dangerous or diseased tree from website information alone.
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Tell us what you need doing and send a few photos — we will come back with honest advice and a written price for work across Liverpool, Merseyside, Wirral, Ormskirk and Lancashire. We cut trees, not corners.