Trees face huge challenges
With more new pests and diseases reaching our shores tackling pests and diseases is now an urgent priorityLearn about the threats
Oriental gall wasp was discovered for the first time in Britain in June 2015.
Oriental chestnut gall wasp is a species of gall wasp native to China which causes distinctive growth irregularities, or galls, to form on sweet chestnut trees (Castanea sativa) but does not affect horse chestnut trees. It was first discovered in the UK in Kent, in June 2015. A 2016 Forestry Commission survey found the oriental chestnut gall wasp in several locations in London and the South East.
Oriental chestnut gall wasp does not bite, sting or pose any other threat to people or animals.
If you think you’ve spotted this disease please inform the Forestry Commission using the Tree Alert reporting tool. Three good-quality digital photographs are required to aid identification.
For more information visit the Forestry Commission.