Daylily is a native from Europe to China, Korea, and Japan. Their large showy flowers have made them popular worldwide. There are over 60,000 registered cultivars. Daylilies can be grown in USDA plant hardiness zones 1 through 11, making them one of the most adaptable landscape plants. The flowers of some species are edible and are used in Chinese cuisine. They are sold (fresh or dried) in Asian markets as gum jum or golden needles or yellow flower vegetables. More daylily pictures...