QuestionsHow to growFlowersBorder Perennial FlowersDividing the ice plant. 0 Vote Up Vote Down Els & Peter O\’Connor asked 14 years ago How does one divide the ice plant, Sedum spectabile,Mine is 10yrs old and I’d like to share it. 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago It can be divided in spring as growth begins. It forms a tight clump but established plants can be lifted and split in two or three.