|C. hypoleuca is a perennial with a clump-forming habit. The flowers are large, scented and may be many shades of pink from pale to violet pink.
C. hypoleuca have plants that are attractive to bees and butterflies, and are good cut flowers. Sow seeds late summer or eary fall in milder climates or early spring in colder climates. Plants will do better if lime is added to the soil, especially in acidic areas.