Daylilies are prolific bloomers and they are easy to grow. There are hundreds of varieties of daylilies, from the well-known native orange types found along roadsides to hybrids of many colors. They form dense clumps as they mature, and produce stalks of buds that open one after another to show flowers continuously for several weeks. Some newer varieties rebloom from early summer until frost. The leaves grow from the crowns in “fan” arrangements. Separate daylilies into small clumps of about three fans for transplanting. Nurseries sometimes sell daylilies as potted plants, ready to set out in your garden and bloom the first season.
Select a sunny location with well-drained soil. Daylilies grow best in full sun, six to eight hours a day. They will tolerate partial light shade, but the size, number, and colors of flowers may be compromised. Daylilies can be transplanted in spring, summer or fall.
Prepare the soil by digging or tilling it to a depth of 8 to 12 inches. Work the soil until is it finely-textured, and remove clumps of grass and roots. Mix in plenty of compost. Daylilies will grow in most soil types, but a balanced soil pH and soil rich in organic nutrients will give the best results.
Dig or lift a clump of daylilies from an established bed if you want to make divisions. Separate a large clump into smaller pieces by pulling apart the crowns, keeping feeder roots intact. If you are transplanting a potted daylily, loosen it from its container and slip the plant out. For spring transplanting, leave any top growth and set the entire plant into the transplanting hole, covering the roots. For summer transplants, if the daylily has bloomed or is blooming, trim back the flower stalks and set the clump in its new planting hole. For fall transplants, trim back all top growth to five or six inches, and set the clump in the ground.
Set transplants at the same depth the plants were previously growing. Firm the soil around the transplants.
Water in the daylily transplants. Pay particular attention in the summer, and do not allow the transplants to dry out in the summer heat.