Propagate from seed sown in situ or in shallow seed trays. Crush the dried fruiting capsules to remove the seeds and sow in autumn, in sandy soil. Scatter seeds and cover with a thin layer of sand (1-2 mm thick). Water well and keep moist, or wait for the oncoming rains. Germination is rapid after a week or three (when seed is viable). Prick out the seedlings into flower beds or containers when large enough to handle. Once they have finished fruiting and the plants have dried, the fruiting capsules can be stored in a paper bag, in a cool, dry place, ready for the next autumn.