It's no exaggeration to say that daylilies are the premier flowering perennial. From a handful of wild species belonging to the genus Hemerocallis, breeders have produced tens of thousands of hybrids in a dazzling array of colors, patterns, and shapes. Adding to their appeal is their hardiness, ease of care, and ability to combine well with other plants. With so many daylilies currently available, a pictorial guide to the best and most exciting cultivars is essential. More than 1700 daylilies—1400 of them new to this edition—are illustrated in close-up, detailed photographs. Each photograph is accompanied by a comprehensive description that includes information on color, size, bloom season, and parentage. Also included are chapters on daylily physiology, the history of the genus, the history of daylily hybridizing, hybridization techniques, and cultivation. Peat and Petit have created an authoritative reference and essential resource for anyone—nursery professional, hybridizer, designer, or enthusiast—who wishes to explore the vast potential of these beautiful plants.