Dieback of ash, a disease caused by the fungus Chalara fraxinea, was identified in the UK in 2012.
MORE INFORMATION ON ASH DIEBACK
Oak processionary moth (Thaumetopoea processionea, OPM) is a pest that presents a hazard to oak trees and human health.
MORE INFORMATION ON OAK PROCESSIONARY MOTH
Ramorum blight is a disease caused by the fungus-like pathogen Phytophthora ramorum that can infect a range of tree and plant species.
MORE INFORMATION ON RAMORUM BLIGHT