The Q&A Archives: dividing autumn joy sedum

Question: My autumn joy sedum is pretty large, so large that it flopped over. It grows in a circle so i was wondering that if i divide it how do i do it and where do I make the splice ( in the middle to make 2 half circles?)

Answer: This plant is not too fussy about how it is divided. A large mature plant is usually be made into at least four divisions (this is to encourage vigorous new growth) and potentially many more than that if you desire lots of plants. Use a sharp spade or knife to cut straight down through the plant to yield sections with top growth and corresponding roots attached. A division or piece about six inches in diameter will make a nice plant in one season, a piece about four inches in diameter will make a nice big plant in year two. Discard the oldest woodiest portion of the plant closest to the center. A good time to divide is in early spring, but you can do it any time the ground is workable. Replant at the same depth as it grew before. To help limit flopping, be sure it is in full sun and lean soil, and do not overfertilize it.

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