The Tregothnan garden covers over 40 hectares. Current projects include the restoration of the original Myrtle Avenue, and the reclamation of a sunken garden with plants collected during our Garden Directors South American expeditions. A collection of rare and unusual conifers from Edinburgh Royal Botanic Garden has also been planted, as have plants from a Chinese expedition, giving the garden a truly international feel.

Tregothnan it also an official 'safe site' for the keeping of rare or endangered trees from all over the world. The garden holds some 'Red Book' endangered plants and trees which are larger than any remaining in the wild. Plants from trips to Japan and South America in 2007 add excitement to the garden. Tregothnan is home to the worlds only surving travelling greenhouse, a Wardian Case.