Woodland Trust

Nature's CalendarNature Detectives

Look out for dog rose flowers this month.

How fast does spring move?


From spotting the first snowdrop in spring, through to looking for the autumnal colours in leaves, Nature’s Calendar volunteers record the signs of the seasons where they live. These records add to the longest written dataset of its kind. Beginning in 1736, the results are helping us to understand how nature is responding to a changing climate.


Along with the BBC's Big Spring Watch and the British Science Association we’re asking everyone to look out for some commonly seen natural events. From this we’ll aim to calculate how fast the arrival of spring 2015 sweeps across the UK from south to north. Snail’s pace, walking pace, jogging pace? Only you can help us find out!

If you are a teacher or group leader remember that you will need to register once on behalf of the class and record the first collective observation.


Already registered? 
Login and record your sightings now!