Daylily, Happy Returns DaylilyHappy Returns Daylily is a reblooming evergreen perennial with strap like deep green foliage that is notable for its heavy blooms. The fragrant canary yellow flowers with lightly crimped edges bloom on upright stems in summer and continuously reblooms until the first frost. Each flower's bloom lasts a day attracting butterflies and pollinators. Grows best in deep rich well drained soils. Drought, salt, and pollution tolerant once established. To learn