The gardens at Howick are primarily the work of Charles, 5th Earl Grey, his wife Mabel, and their daughter Lady Mary Howick between 1920 and 2001. They established and maintained an informal and natural style of gardening first advocated by William Robinson in the late 19th Century, which completely replaced the more formal Victorian planting of their ancestors. All that is left of the old garden are some of the mature trees; all else was swept away. Lovely flower and shrub gardens. In the spring and early summer the Woodland Garden is particularly lovely with rhododendrons, camellias and magnolias. Extensive grounds including formal gardens around house.