A journey inside this unique collection is a chance to experience the beauty and diversity of forests around the globe. Stretching across two-thirds of the Gardens, the Arboretum surrounds our glasshouses in a leafy enclave for you to walk, wander and discover.
The 14,000 trees rooted here represent more than 2,000 species, including rare and ancient varieties. This great collection contains trees as old as the Gardens themselves, many that cannot be found elsewhere in Britain.