Tree Alert Page Topper

This site has been set up to gather information about the health of the nation's trees, woodlands and forests. This information will support important tree health monitoring and surveillance work, contribute to ongoing scientific research in this field and, ultimately, support efforts to protect the nation's trees.

For an overview of what information will be required, get info here (opens a new tab)

This site uses cookies. We have already set cookies which are essential for the operation of this site.

Please be aware you will not be able to submit a report without uploading photographs of your observation.

TreeAlert has been developed to make use of the features provided by the latest generation of web technologies, and has been tested on the most recent desktop and mobile browsers. Thus it cannot be guaranteed that TreeAlert will perform optimally on all forms of hardware and software.

Submit a general report of a problem affecting the health of a tree(s), including Oak Processionary Moth and Oriental Chestnut Gall wasp. Submit a report of a specific tree pest or disease that you have seen.