Have you discovered oak processionary moths on private property? Here's what to do.
If trees with oak processionary moths are located on private property, the property owner must take care of removing the caterpillars. Since the caterpillars' stinging hairs are harmful to health, oak processionary moth control should be handled by a specialist company.
If you discover an oak processionary moth infestation on private property, you can inform the responsible district office in Hamburg. However, you are not obligated to file a report.
No
The caterpillars of the oak processionary moth have tiny, stinging hairs. These hairs are toxic and can cause health problems upon contact. If your skin comes into contact with them, it can cause intense itching. Red welts or inflammation may develop. Your eyes or respiratory tract can also become irritated. Sometimes, dizziness, fever, or circulatory problems even occur. The symptoms can last from two days to two weeks.
If you discover an infestation on your property, you as the owner are responsible for having the caterpillars removed by a specialist company at your own expense.
For questions, please contact the plant protection advisory service for home gardens, allotments and public green spaces: HuK-beratung@bwai.hamburg.de
Until the caterpillars are removed, you should avoid infested areas.
If you have come into contact with the stinging hairs, go home as quickly as possible. Take off your clothes and shower thoroughly. If the hairs get into your eyes, rinse them with clean water. Wash your clothes at 60 degrees Celsius. If you experience severe symptoms, seek medical attention.
No
The responsible authority will accept your report immediately.
No
Not applicable
Law for the Protection of Public Safety and Order (SOG)
https://www.landesrecht-hamburg.de/bsha/document/jlr-SOGHArahmen
Keywords: Caterpillar, oak processionary moth on private land
Last updated: 13.10.2026