The UK Forestry Commission has issued a warning to the public and forestry trade to remain vigilant as the risk of oak processionary moth (OPM) infestations increases ahead of the peak summer season. OPM is a highly invasive species native to Europe, but not the UK, and has been known to cause severe reactions in humans, particularly in children and pets. The moths' caterpillars can cause painful blisters, rashes, and respiratory problems in some individuals.
According to the Forestry Commission, the greatest risk period for OPM infestations is during the summer months, typically from June to September. During this time, the moths are most active, and their caterpillars are more likely to be found on oak trees. The commission is urging the public and forestry trade to inspect oak trees regularly for signs of infestation, including the presence of the moths' characteristic white, cottony egg masses.
The Forestry Commission is also advising landowners and forestry managers to take precautions to prevent the spread of OPM, including using biological control methods and ensuring that any infested trees are promptly removed. The UK government's Environment Agency has also issued guidance on how to identify and manage OPM infestations.
Despite the risks, the Forestry Commission stresses that OPM infestations are relatively rare in the UK, and most oak trees are not affected. However, the commission is urging the public to remain vigilant and report any sightings of OPM to the authorities. The UK's Forestry Commission is working closely with the UK government's Department for Environment, Food and Rural Affairs (Defra) to monitor the spread of OPM and develop strategies to prevent its spread.