OPAL Tree Health Survey

Help scientists monitor and protect UK trees and woodlands

    About this project

    The Open Air Laboratories (OPAL) network is a UK-wide citizen science initiative that allows you to get hands-on with nature, whatever your age, background or level of ability.


    The OPAL Tree Health Survey explores the health of trees in UK woodlands. Trees are vital – bringing nature into urban areas, supporting the rural economy, providing food and habitats for wildlife, and helping to combat climate change. However, trees in the UK are under threat. The number of pests and diseases attacking them has increased in the last few years.


    The project website provides easy-to-follow survey instructions, straightforward tree identification guides and support from community scientists across the UK. To participate, all you need to do is download the mobile app or print the survey documents (ideally in colour), find a site with safe access to one or more broadleaved trees and start surveying! The best time to complete this survey is between May and September. You can then submit your findings using the online form on the OPAL Tree Health Survey website.

    Social Networks