Sometimes unfortunate things do happen and fragile parts of cactuses can break off for many reasons. As long as the piece that broke off is healthy, then it does not have to be the end for that portion. Andrea Galbreath from succulent business, Just Succ It, says that you can ‘absolutely’ replant when this happens, advising: ‘A broken piece can be replanted the same way one would replant a cactus cutting.’