These four gardens get completely dug up twice a year, replace it with all new plants. The gardeners don't use a lot of sprays but are very, very careful in their plant selections. They use a lot of original species rather than hybrids. Changing all the plants takes them a whole week, the entire workforce of Hamilton Gardens. We close it off and they just distribute them out and replant it. Because the garden designers were Muslims and had a restriction on representations of a human and animal figures, the designs that you see are often abstracts of plants.