Drought tolerant plants such as Aloe, Agave, Aeonium, Cotyledon, Rosemary, Mangave and Yucca give this landscape color and texture. We installed crushed granite as a topdressing over the planting areas and installed 'Autumn' accent boulders. We built a stone retaining wall along the neighboring wall and softened it with Prostate Rosemary to tumble over the ledge.