Has it been more than 4 years since you divided your daylilies? Then, now is the time to divide your clumps of daylilies to get maximum blooms next year. Horticulture experts recommend that clumps be divided in late summer and early fall.
The dependable daylilies, members of the genus Hemerocallis, provide a multitude of brightly colored flowers in mid summer. As their name implies, each individual flower lasts only one day, but the large number of flowers on each stem provide a three-week period of bloom for most cultivars. There are nearly 60,000 different daylily cultivars that range in color from near white through yellow, orange, and red, to brown and violet. These tough perennials have a reputation for low maintenance and require little in the way of special care. Daylilies are very adaptable and can be grown in almost any soil in every corner of the country.
They bloom best if given full sun, and they produce more flowers if they are divided periodically. Division is also a great way to expand your planting and share plants with gardening friends. Now is the best time to divide your daylilies. Their roots will have time to grow before winter comes if this task is completed in early September.
For more information on dividing daylilies, refer to this USDA link: