Welcome to TreeAlert
Report suspected tree pests and diseases found anywhere in GB
There will be a period of scheduled maintenance on Monday 22nd September between 07:00 and 09:00. Service may be impacted during this time.
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
Abiotic Reports
- Stem Cracking
- Oak Shake
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
Report instances of oak shake this felling season
Scientists are calling on woodland owners to report instances of oak shake this felling season as part of research to identify the causes of the cracking.
Help prevent establishment of spruce bark beetle by joining national monitoring project
Help protect Britain’s spruce forests by installing pheromone traps and contributing vital data on the spruce bark beetle, Ips typographus.
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.