Oak Processionary Moth Found in Gerrards Cross

We were recently called out to a property in Gerrards Cross to carry out some tree work. The job involved a light reduction and a 20% crown thin on a young oak tree.

While working our way around the canopy, we discovered a nest of Oak Processionary Moth (OPM) at the end of the day. We returned the following week to complete the job, only to find three more nests had appeared on the same tree. Fortunately, we were able to remove and safely dispose of all the nests before they had a chance to hatch.

What is OPM?
Oak Processionary Moth (Thaumetopea processionea) is an invasive pest that affects oak trees. The caterpillars feed on oak leaves, which weakens the tree, making it more vulnerable to other pests and diseases. They also pose a serious risk to human and animal health — the hairs on the caterpillars can cause severe skin irritation, eye problems, and respiratory issues.

These pests have been slowly moving further north from their initial outbreak areas in London. Around a year ago, we were called out to deal with nests in Essex and then Harrow. Now, it seems they’ve reached our doorstep here in Buckinghamshire.

If you spot any unusual nests or caterpillars on your oak trees, especially during the warmer months, don’t attempt to remove them yourself — get in touch with a qualified professional.