Syncolostemon incanus grows easily from cuttings and seeds. Cuttings are made in spring and planted in a tray filled with well-drained rooting medium such as 2 parts potting soil and one part washed river sand. The cuttings are then placed in a well-ventilated room until they have rooted. This can take up to 14 days.

Seeds are sown in spring or early summer in a well-drained seedling mix such as washed fine river sand and covered lightly with sieved potting soil. They usually take 6 days to germinate. Place the tray of seedlings in a hardening off area once the seedlings have germinated. Water once a week until they are mature enough to survive in a flower bed.

Rooted cuttings and seed-grown plants can be planted in a sunny flowerbed with well-drained, sandy, loam soil. Water well in spring and summer but the plants must not be over watered..