Seeds, ground cover mix - Spreading perennials which produce stunning masses of flowers in spring. Superb on dry banks, walls and rock gardens or use between patio flagstones. Grows 3-6 inches high and spreads 1-1.5 feet across. They are outstanding performers. Cut back halfway after blooming. Prefers part shade in hot climates, full sun where summers are relatively cool. Winter hardy to zone 4.