A natural biopool is the focus of the garden experience. An ecologically responsive solution that uses little energy, the biopool blends with the natural colors of the hillside flora. Wetland and bog plants thrive in the mini-wetlands, including cattails, iris, rushes, sedges and water lilies. These plants are a vital part of the natural water cleaning system by filtering the water and obtaining a natural mineral water quality. The plants, microbes and beneficial bacteria cleanse the water without the use of chemicals.