Costa explores how gardens mean different things to different people. For the members of the Cactus and Succulent Society, these prickly and strange plants are habit forming with some members, like Horst Berger, having close to 1,000 plants. For Rita Kelman, she is passionate about growing fresh, chemical free Asian vegetables and herbs for the city-dwellers while the Mizaan volunteers put their Islamic faith behind a bush regeneration project in Sydney’s south west.