Observatree are looking for your help with a citizen science project to combat tree disease.

Nineteen tree pests and diseases are now officially in the UK with more on the horizon. The good news is that there is plenty that you can do to help, since our Observatree team is keen to enlist a new tier of public support to track three high-priority problems: ash dieback, oriental chestnut gall wasp and cedar shoot blight.