Daylilies may be the most carefree of all flowering perennials. The plants grow quickly and are long lived. They thrive in almost any type of soil, will grow in sun or shade, and are rarely troubled by insect pests or disease. Daylilies are known for their toughness, but they also dazzle with their big, colorful flowers. Blooming starts in midsummer and continues into early fall, with new blossoms opening each da