QuestionsHow to growSummer BeddingFlowersSeparating Lobelia 0 Vote Up Vote Down Amber Whitman asked 16 years ago We have some white lobelia we would like to separate to replace some dead plants. How would you do this? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 6 years ago No is the answer. That small lobelia cannot really be split as it is too flimsy. Easier to buy some more plants.