Showy clouds of white star-shaped flowers make White Jupiter's Beard (Centranthus ruber 'Albus') especially engaging in the garden. A reliable perennial, it grows quickly to 3 feet tall with a spread up to 2 feet. It likes full sun but will grow in part shade and prefers moist, well-drained soil but can do well even in poor soils. A good cut flower that blooms all summer if deadheaded. Many gardeners consider it an ideal companion to roses.