Answer: First dig up the clump, then separate it into divisions. Some daylilies will come apart easily, others need to be cut with either a sharp spade or a knife. Make a piece with roots and several sections of corresponding top growth (fans) for a nice plant in a year or so. Or, for the maximum number of plants, you can divide it into individual fans. You can also make just a few plants from the original, these will regain mature size quickly. Replant at the same depth as it grew before and water well to settle the soil. Mulch, and water as needed to keep the soil slightly moist until it re-establishes. You can divide them at almost any time of year, early spring to early fall, but late summer is probably the best time with very early spring the next best time. If you do it in summer or fall, trim back the foliage to compensate for roots lost in the process.
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