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 anywhere else in Britain.

Meaning ‘a place with trees’ in Latin, the Arboretum is not only a striking landscape but a scientific treasure trove, vital to our botanical and conservation research.

Every tree planted here is a source of knowledge, helping us conserve the habitats of beloved native trees and protect some of the world’s most fascinating species at risk from deforestation.