The Plant Health Service has to date intercepted 62 cases of Oak Processionary Moth (OPM) in England, Scotland and Wales – all outside the control area, and all on imported trees.

At risk are ‘larger’ oak trees (defined in this case as those over 8cm in girth at 1.2m above the root collar) that have been imported from Germany or the Netherlands since September 2018.

This pest has spread significantly in the past year. The Plant Health Service (APHA and Forestry Commission) is taking swift action to control this outbreak, and we urge all LI members to assist by:

More information and guidance at

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