These exotic natives of the Americas are among the most striking of drought-tolerant plants, and they make wonderful accents in the landscape, providing excellent contrasts to flowering perennial plantings. They can also be massed effectively, and many of the species are small, ideal for use in containers. The authors point out that innovative nurseries and gardeners in cool, humid regions of North America and Europe have shown that many of these plants may be suitable for areas with climates very different from their native range. Full information on cultivation and propagation is provided.