Berlin Park Closures: Toxic Moth Hairs Plague City

An insect infestation is currently affecting Berlin, with the oak processionary moth caterpillar identified as the primary cause. These caterpillars, active between May and July, possess toxic stinging hairs that can cause skin rashes, eye irritation, and breathing difficulties upon contact. Several districts in Berlin are experiencing a notable increase in affected oak trees this summer, leading authorities to close parks, sports facilities, and pedestrian routes.

Difficulties in containment arise from the caterpillar's classification as an allergen rather than a public health pest, limiting intervention powers. Furthermore, plant protection rules restrict the use of certain biocides. While officials recorded 5,032 infested oak trees at 881 locations last year, experts anticipate the outbreak will worsen, exacerbated by forecasts of hotter, drier weather across Germany and Central Europe this summer.

The oak processionary moth is not unique to Berlin or Germany, being established across much of Europe. Its presence has been noted in countries including the Netherlands, France, Denmark, and along the Mediterranean coast. The pest was also accidentally introduced to the UK in 2006 and is now established in parts of southeast England.