There may be more types of hardscaping materials in this garden than actual species of plants. Wood, concrete, gravel, metal, tiles, and glass. Yet the colors repeat – the sienna of the wood and metal, and the grey-white of the gravel, glass, and concrete – making the design cohesive rather than seeming scattered. With a limited color palette of mostly light or grey-green plants, this repetition results in a clean, pretty space. The bold lines of the fence, the metal, and the grasses and agave are a simple and strong compliment to the plants gently cascading over the retaining walls.