Trewithen Gardens, created and extensified by George Johnstone in the first fifty years of the last century, are outstanding and internationally famous. The great glade on the south side is a masterpiece of landscape gardening and is a monument to the genius of George Johnstone. These gardens covering some 30 acres are renowned for their magnificent collection of camellias, rhododendrons, magnolias and many rare trees and shrubs, which are seldom found elsewhere in Britain. The extensive woodland gardens are surrounded by traditional landscaped parkland. The nurseries produce some of the finest quality plants and shrubs in Cornwall with over 1500 varieties now available.