The total area is 175 hectares (about. 432 acres), of which the largest part constitutes a nature reserve including our arboretum.
The garden proper is about 40 hectares and we grow approximately 12,000 different species in various parts of it. Our famous rock Garden, with about 5,000 species, has received three stars in the Guide Michelin. Other fascinating parts of the garden are the Rhododendron Valley and the Japanese Glade, just to mention a few.