The Q&A Archives: Day lilies

Question: when best time to divide day lilies?
They are over 5 yrs old and never been divided.
Have 4 plants in a 12 foot bed. They have bloomed every year but don't last long. One plant is at least 2 ft wide across others are not as big.

Answer: Daylilies are typically divided about every three to five years, although they can be divided every year if you want to increase your plants faster. Division helps keep them vigorous and blooming well, it also allows you to improve the soil where they are planted periodically. Early spring is a good time to divide, so is late summer or early fall. You can divide into fairly small sections of just a few fans each, or if you prefer you can cut a plant into fairly large pieces of say six inches in diameter. Some plants will separate easily, some have to be cut. Sometimes older plants seem to lose vigor toward the center and you will find that division taken from the outer portion of the plant are more vigorous. Enjoy your daylilies!

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