Southern California natives can find good company with plants from other areas of the world with a Mediterranean climate: southern and southwestern Australia, the western cape of South Africa, central Chile and the Mediterranean basin, including France, Italy, Greece, Morocco, Portugal, Spain and Turkey. Garden designer Susanne Jett likes to mix perennials, grasses, shrubs and trees indigenous to these areas to create striking and unusual designs. The Desert Spoon, Dasylirion wheeleri, is among her picks.