Asian Hornet Threat Grows as Jersey Nest Numbers Rise by 50%
Jersey is facing an increasing public safety risk from Asian hornets, with officials warning that serious stings and potentially life-threatening allergic reactions are likely to become more common.
More than 800 Asian hornet nests have been identified across the island so far in 2026, representing a 50% rise compared with the same period last year, according to Mary Le Hegarat, Minister for Environment, Agriculture and Fisheries.
The invasive species was first recorded in the Channel Islands in Jersey in August 2016, before being detected in Guernsey seven months later.
Asian hornets prey on a range of insects, including honeybees, butterflies and beetles, posing a threat to local biodiversity. Their stings can also cause serious medical complications, with some incidents requiring hospital treatment.
Responding to a written question in the States Assembly, Le Hegarat said most of the nests discovered this year had been successfully destroyed. However, she warned that the issue had developed beyond the control of an invasive species and had become a wider public safety concern.
“Asian Hornets are increasingly becoming a broader public safety issue requiring a coordinated response across government, public services, landowners, businesses, community organisations and volunteers,” she said.
Government figures show that 50 sting incidents were reported in Jersey during 2025. These included one confirmed case of anaphylaxis, a severe allergic reaction that can be life-threatening, alongside several incidents that resulted in hospital attendance.
Officials estimate that around 1,000 nests could be discovered across Jersey during 2026. In the longer term, the island's environment could potentially support as many as 2,000 nests.
Authorities have warned that the growing population is likely to increase the risk of serious stings, including reactions that could prove fatal.
Many incidents occur when people unknowingly disturb hornet nests. Officials have also highlighted several near misses involving members of the public, contractors and children, underlining the need for greater awareness and caution.
The cost of tackling the problem is also increasing. The States of Jersey is expected to spend approximately £90,000 on its response this year, compared with £74,000 in 2025 and £71,000 in 2024.
The funding supports nest removal, specialist equipment and the staff resources required to coordinate efforts across the island.
Despite the continued increase in numbers, the government has said eliminating Asian hornets entirely is not considered a realistic objective. Established populations in Jersey and nearby areas of France make complete eradication difficult.
Instead, the island's strategy centres on monitoring hornet activity, destroying nests where possible and limiting the damage to wildlife, businesses and public safety.
With nest numbers continuing to rise, officials are emphasising the importance of a coordinated response to manage the threat and reduce the risk of further serious incidents.
