Royal Occasion daylily has deep purple flowers with a nearly black purple eye-zone. It has a narrow yellow watermark just below the eye-zone and a bright green throat. The edges of the petals are ruffled while the edges of the sepals are smooth. The flowers measure 4 1/3 inches in midseason. They stay open for 16 hours or more. In milder climates, the foliage is green all year round. Royal Occasion is delightfully fragrant. Although each flower lasts only one day, there are multiple buds on each stalk and several stalks on each plant. The buds open in series, so a single plant will continue to bloom for 2 weeks or more. It may re-bloom. It is easy to grow and does well in full sun to part shade.