Within Great Britain, ramorum disease has been confirmed in Japanese larch trees in Wales, South-West England, the Peak District in Central England, Lancashire and Cumbria in North-west England, Galloway in South-West Scotland on the Craignish Peninsula and the island of Mull in western Scotland. Operations to deal with these outbreaks are being managed respectively by Forestry Commission England, Forestry Commission Wales and Forestry Commission Scotland. Larch plantations in other parts of Britain are being closely monitored for any signs of outbreaks there. Detailed information about the overall situation in Great Britain, and individually in England, Wales and Scotland, is available from the links below:
P. ramorum outbreaks have also been confirmed in Northern Ireland and the Republic of Ireland, where the Northern Ireland Forest Service and the Irish Department of Agriculture Forest Service are leading operations.
P. ramorum has also been responsible for the deaths of millions of native North American oak and tanoak trees and other species in the USA, especially in California and Oregon. Further information about the outbreak there is available on the website of the California Oak Mortality Task Force (COMTF).