Lewisia
Prized by rock garden enthusiasts, Lewisias are strikingly beautiful perennials, all native to western North America. When in full bloom in the spring, they are hard to beat in terms of floral display with their profusion of brilliantly colored flowers. The most popular species are Lewisia cotyledon and Lewisia tweedyi, two evergreen plants with flat rosettes of fleshy, succulent leaves. They are ideal subjects for rock gardens, wall crevices, and raised beds.