Caterpillars of the Oak Processionary Moth are a pest which can be a hazard to the health of oak trees, people and animals. The caterpillars shed their tiny hairs, which can then be blown in the wind causing itchy skin rashes, eye and throat irritations and, sometimes breathing difficulties.

The caterpillars eat the oak leaves and large numbers can defoliate whole trees bare. OPM is a native species of southern Europe which was accidentally introduced to England, leaving our precious oak trees vulnerable.

The greatest risk period is May to July, but nests should always be avoided because they may contain thousands of hairs containing toxins and remaining active for up to 5 years.

We have carried out the removal of OPM in conjunction with Transport for London.