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.
TreeAlert 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
- Chalara Dieback of Ash
- Dothistroma Needle Blight
- Acute Oak Decline
- Phytophthora lateralis
- Asian/Citrus Longhorn Beetle
- Oak Processionary Moth
Abiotic Reports
- Stem Cracking
- Oak Shake
Latest News
Increase in Sooty Bark observations
“We need people to be recording nature when out and about to help us learn as much as possible about our world.”
Forest Research entomology scientist, Molly Davidson, discusses her work as a diagnostician for TreeAlert, the hidden world of moths, and a new survey investigating what motivates people to take part in citizen science.
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.