Oak processionary moth infestation spreads across German cities, prompting coordinated control efforts

In Bremen the oak processionary moth has become widespread, with red‑white warning bands on trees throughout all districts. The city’s environmental agency (UBB) is marking infected trees and deploying specialist firms to remove nests, prioritising schools, kindergartens, playgrounds and parks to protect residents, especially children, the elderly and people with asthma. Health officials warn that the caterpillars’ urticating hairs can cause severe skin irritation, allergic reactions and respiratory problems.

In Berlin, a crisis meeting of environmental and health authorities confirmed that the twelve city districts will remain responsible for managing the outbreak. Plans emphasise preventive measures such as vacuuming, adhesive barriers or bacterial treatments, avoiding chemical pesticides. Districts Reinickendorf and Charlottenburg‑Wilmersdorf will pilot solutions, after several sports facilities were closed this summer due to infestations. Authorities call for stronger coordination and advisory support from the state senate.