It's the longest written biological record of its kind with almost 3 million records spanning 300 years.
Let us know what's happening near you, from emerging butterflies and baby birds to ripe berries. Your records will help scientists monitor the effects of weather and climate change on wildlife.
Take part in Nature's Calendar and you can tell us what you've spotted in three easy steps.
State of UK woods and trees
The State of the UK’s Woods and Trees report focuses on the UK's native woods and trees. It outlines their current extent, condition and wildlife value, benefits, threats and what is being done to help them.
Climate change
When it comes to climate change, our message is clear: native woods and trees are one of the best ways to tackle the climate crisis.
