La Mortella is divided into two parts: a lower garden, called The Valley, and an upper garden on The Hill, terraced with retaining walls. The many areas of the garden are linked by a network of walks, paths, ramps and steps that climb the dry walls allowing the visitors to reach the upper hill, where they can enjoy breathtaking views of the Bay of Forio.
The garden spreads for about 2 hectares and has a major collection of exotic, rare plants that is constantly widened and developed, year after year. The diversity and wealth of the collection is such that La Mortella can be considered a botanic garden. Fountains, ponds, streams are scattered everywhere and allow the cultivation of a various array of water-loving plants such as papyrus, lotuses and tropical water lilies. The garden has three tropical greenhouses: the Victoria House, the Orchid House and the Temple of the Sun.
Interesting garden features are the Thai House, a quiet place of meditation surrounded by an Orient-inspired garden, with lotuses, peonies, bamboos and oriental maples; the Crocodile Pool, still in the Hill Garden is fed by a stream that runs among olive trees and agapanthuses; the Nymphaeum, a surprising formal corner emerging from the Mediterranean maquis, and William’s Rock, where the ashes of the late composer are kept.
Throughout the world garden lovers and plantsmen know and appreciate Lady Walton’s work and passion which produced this enchanted garden. Her genius and creativity are celebrated by an orchid hybrid that was created in 2005 by the Italian Orchid breeder sig. Pozzi: Miltassia Lady Susana Walton. This can be admired today in the Orchid House at La Mortella.