Oak processionary moth caterpillars were first spotted emerging from their egg plaques in London on the 14th of April – later than in 2020. A big thank you to the Royal Parks for monitoring egg hatch.
Our contractors began treating known affected oak trees from the 19th April. From surveying and monitoring activity over the past two years, we have identified more than 2000 sites (areas with one or more trees) for treatment in the Control Zone. Over 450 of the identified sites due for treatment have had their first sprays and we expect this number to rise rapidly within the next few weeks.