Tree Pest Alerts

 

Diagnostic details of pathogens and pests

Exotic Pest Alerts and Tree Pest Advisory Notes are handbills showing signs and symptoms of tree pests and diseases and contain advice on what to do if you suspect the pest or disease is present.

They may be downloaded from this page. Exotic Pest Alerts are also available free from the Forestry Commission Plant Health Service.

Oak pinhole borer

Tree Pest Advisory Note

Wood boring beetle Platypus cylindrus that infests and breeds in cut trees, windblown trees, standing dead and dying trees.

Download ^(PDF-286K)

Oak processionary moth

Tree Pest Advisory Note

A major defoliator of oak in Europe.

 Download ^(PDF-412K)

Emerald Ash Borer

Exotic Pest Alert

Diagnostic details of a quarantine pest that causes significant damage to ash trees (Fraxinus spp.).

Download ^(PDF-4140K)

Phytophthora ramorum (Sudden Oak Death)

Exotic Pest Alert

Diagnostic details of a quarantine pathogen that has been found affecting trees in England.

Download ^(PDF-184K)

Horse Chestnut Leafminer

Exotic Pest Alert

Diagnostic details of a quarantine pest that has recently made its appearance in southern England.

Download ^(PDF-179K)

Asian Longhorn Beetle

Exotic Pest Alert

Diagnostic details of a quarantine pest of broadleaved trees.

Download ^(PDF-1721K)