Pest Alert: Oak Processionary Moth

Posted on: 25th September 2012

The oak processionary moth, a native of mainland Europe, is breeding on oak trees in Brent, Ealing, Hounslow, Richmond upon Thames and Hammersmith & Fulham Boroughs. Its caterpillars feed on oak leaves and produce silken nests on the trunks and branches of affected trees. As well as seriously damaging trees, the caterpillars can pose a risk to human and animal health.  Download the leaflet here.


  • DO NOT touch the caterpillars or nests.
  • DO NOT try to deal with them yourself. Effective treatment requires specialist skills and careful timing. Contact with nests or caterpillars can endanger your health.
  • WARN children not to touch caterpillars or nests and KEEP pets away.

If you think you have seen the caterpillars or one of their nests or webs, call us on 01420 22255 or email

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