|How big of a clump should be left when dividing daylilys and what time of year?
|Divide in early spring just as new growth starts. A general rule for perennials is that each clump should have a good root system and several new shoots. However, daylilies can also be divided into what is called "single bud division," which is used to maximize the number of new plants. Each clump should still have a healthy chunk of root system, but can have just one bud.