Welcome to TreeAlert
Report suspected tree pests and diseases found anywhere in GB
About
Forest Research is the research agency of the Forestry Commission and Great Britain’s principal organisation for forestry and tree-related research. We are internationally renowned for the provision of science, research, evidence, data and services in support of sustainable forestry.
Within Forest Research, the Tree Health Diagnostic and Advisory Service provides advice and where possible diagnosis and identification of tree pests and diseases.
Tree Alert is used to gather information about tree health issues across Great Britain. This information supports important tree health monitoring and surveillance work, contributes to ongoing scientific research, and helps to protect the nation's trees.
Tree Health Reports
How to submit a report
What we do with your reports
Pests and Diseases
Submit a Report
General Report
Pest or Disease Specific Reports
Diagnosis Service
If you own or manage trees you can request a diagnosis of a pest or disease problem. This may be a chargeable service.
More information is available on the Forest Research THDAS page.
Latest News
TreeAlert launches new user dashboard
TreeAlert has launched a new dashboard that gives registered users access to two years of TreeAlert reports as searchable lists, charts and map views.
Stem cracks in conifers – report it via TreeAlert
Forest Research is undertaking a major study and asks forestry professionals across Britain to report stem cracks using TreeAlert, the online tree health reporting tool.
View More News...
Useful Links
Note that some of these links are to external websites for which Forest Research is not responsible for the content. The inclusion of a link to a third party website should not be understood as an endorsement.