Oak processionary moth: Be careful of stinging hairs in nature!

Oak processionary moth: Be careful of stinging hairs in nature!

The warm temperatures of midsummer also cast a shadow on our local forests. The oak processionary moth, a native butterfly species, is causing a stir in some parts of Germany. Mass proliferation occurs again and again, particularly in the federal states in the northeast, southwest and parts of North Rhine-Westphalia. This not only has an impact on nature, but can also pose health risks for the population. According to the Böhme newspaper The stinging hairs of these caterpillars can cause allergy-like reactions as well as skin irritation and breathing difficulties.

However, there is currently no significant infestation in the Heidekreis, as Jobst Böttger, regional spokesman for the Lower Saxony State Forests, explains. However, they warn urgently that the situation could change quickly in the coming weeks, depending on the weather. Residents near infected oak trees in particular should be vigilant.

Risks and precautions

The dangers posed by the oak processionary moth should not be underestimated. Stinging hairs can even be transmitted through the air without direct contact. Therefore, people should keep a good distance from infected trees, especially on walking paths or at the edges of forests. Pets, especially dogs, can also suffer serious health problems from contact with stinging hairs. The Federal Environment Agency advises not to touch caterpillars and webs under any circumstances.

Symptoms that can occur when you come into contact with the stinging hairs include skin redness, itching and respiratory irritation. In rare cases, fever and circulatory reactions can even occur. Insecticides should be avoided for mild infestations; Rather, warning signs and barriers in affected forest areas should help to protect the population.

Control measures

The authorities' control measures are very selective and are only taken when there is a real threat to the trees. This year, the Osnabrück district used a biocide against the oak processionary moth for the first time. Young oak trees were sprayed once at two locations to protect them from being eaten by the caterpillars. However, the long-term effectiveness of these measures remains unclear and should be considered with caution. In heavily frequented areas such as playgrounds or schoolyards, municipal authorities can initiate further measures.

Particular attention is paid to the recommendations for the use of environmentally friendly products, such as the Bacillus thuringiensis in the application Foray ES or NeemProtect, an extract from the Margosa plant. These biological products are considered to be more environmentally friendly and selective compared to chemical agents, which should only be used in exceptional cases.

The spread of the oak processionary moth has a clear impact on forestry. The trees have been weakened by the drought and years of infestation and could be seriously endangered if the infestation occurs again. A permanent solution is not yet in sight and it remains to be seen whether the measures to combat it will be successful in the long term. More information about health risks and measures can be found in an article by mirror to find.