Overview
- Local officials reported a rise in pine processionary sightings in Berlin and Brandenburg this month, with clusters confirmed in Ostprignitz-Ruppin, Potsdam-Mittelmark, Borkheide and Borkwalde.
- The better-known oak processionary continues its northward spread into Denmark and the Netherlands, a movement researchers link to warmer, drier conditions and imported infested oaks.
- Both species carry microscopic urticating hairs that contain the toxin thaumetopoein and can cause itchy rashes, eye inflammation and breathing problems, with people who have asthma and pets, especially dogs, at higher risk.
- Municipal responses include biological treatments with nematodes, vacuuming and removing nests, adhesive traps, signage and temporary closures, but control is costly and not fully effective in large park stands.
- Health guidance urges rinsing skin and eyes with water, removing hairs with tape if needed, changing and washing clothing at high temperature, and seeking urgent medical care for severe reactions.