Seed is sown at the end of February when the nights get cooler. For best results always use fresh seed. Soak Leucospermum seed in water to which hydrogen peroxide has been added, at the ratio of 1% of the total volume. This loosens the outer seedcoat and oxygenates the seed. The softened seedcoat is rubbed off. Dust the seed with a systemic fungicide. Sow on a well-drained medium, firm down and cover with a layer of sand. Seed can be sown in an open seedbed in full sun, or in a seed-tray placed in a sunny position. Germination starts after three to four weeks. The seedlings will have to be pricked out in batches, as the seed germinates at different times. If the root is very long and has been removed without damaging the root-tip, the root-tip should be pinched off to promote root growth.

Cultivars or hybrids are propagated by cuttings, which can be made from November to March. The cuttings should be semi-hardwood, 6-10 cm long, of the current season's growth. The cuttings are dipped for about four seconds in a rooting hormone solution and placed in a growing house with bottom heat (25ºC) and intermittent mist. The young seedlings or cuttings grow fast and are ready to be planted out after a year. Three years after sowing the plants will produce their first flowers.

The plants are relatively short lived and become leggy after about eight years. They are very sensitive to the fungal disease Phytophthora cinnamomeum.