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Oak and pine procession moth spread – Aug 2026

Updated 2 times since CLSTR started tracking revisions of this situation.

What changed

2026-08-04 13:06 UTC → 2026-08-15 03:22 UTC · added removed

Since July 2026 2026, the oak processionary moth has surged across Germany and beyond, prompting an unprecedented public‑health public-health response. In Berlin, Charlottenburg‑Wilmersdorf, Spandau and other districts such as Charlottenburg-Wilmersdorf and Spandau closed parks, sports fields parks and school yards as nests were removed with asbestos‑grade vacuums; asbestos-grade vacuums. In Bremen, the city’s sports environmental department alone recorded over 240 complaints and earmarked more than €500 000 for control. Helicopter and drone spraying approximately 6,200 cases, a sharp increase from 900 the previous year, with municipalities anticipating expenses of biological insecticides at least €100,000 for specialized removal. The outbreak has expanded to Prignitz, Ludwigslust‑Parchim, Bremen and Brandenburg’s Unter‑Spreewald, into Switzerland, where waterway closures were lifted on several sections after risk assessments. The total cost of the German response reached €2.8 million a nest was discovered in Bremen the residential area of Holziken, Aargau, leading to warnings for residents and €500 000 pets. In Denmark, heavy infestations have been reported in Berlin, Odense, with many municipalities authorities deploying specialist firms, pheromone traps drones and nematode treatments. The outbreak spread northward gas burners to Denmark, where Odense and control larvae. Scientists have noted that Denmark is also facing other municipalities reported thousands of infested oaks, launched public‑reporting apps and closed kindergartens and playgrounds. Poland confirmed invasive species, such as the moth in several voivodeships, issuing similar health warnings. Switzerland, ant Lasius neglectus, which may be accelerated by climate change. In Germany, the United Kingdom, France (Brittany) and Norway also reported nests State Office for Construction and issued public‑health advisories. Transport (LBV) announced that waterways in the Lower Spreewald, which had been restricted since mid-June, are once again navigable following moth-related closures. However, some sections near the Schlepziger Mühle lock remain restricted due to ongoing construction. Concurrently, the pine procession moth (Thaumetopoea pinivora) continued continues its rapid expansion in Brandenburg’s pine forests, with district authorities warning of severe skin, eye and respiratory reactions. Across the region, authorities emphasized climate‑driven forests. Authorities emphasize that climate-driven milder, drier springs as are the key driver of both oak and pine moth proliferation and proliferation, necessitating coordinated monitoring, removal monitoring and public‑education public-education efforts to protect health and forest ecosystems.

Versions

  1. 2026-08-15 03:22 UTC Oak and pine procession moth spread – Aug 2026
  2. 2026-08-04 13:06 UTC Oak and pine procession moth spread – Aug 2026
  3. 2026-07-31 07:52 UTC Oak and pine procession moth spread – July 2026

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