This can be done from cuttings or seed. Seeds can only be harvested when the capsule is light brown in colour. Due to the explosive nature of the seeds, one should place cottonwool over the seed capsules to stop them being blasted into the surrounding area. The soft cottonwool will effectively trap any seeds. Seeds are small, about 1 mm in diameter.

When sowing the seed, cover with a medium not deeper than 2-3 mm. Use a well-drained sowing medium of sandy loam with very well-rotted compost, and preferably sieved river sand to cover the seed. The ideal size of the sand grains should be 1 mm.

Move to a sunny (60% sun) well-ventilated location. Sow the seeds in March or April (southern hemisphere). By April of the following year, the plants should be strong enough to be planted in a small, 9 cm plastic pot.

Cuttings are relatively easy. The most important thing is to dry them out. This entails lowering the latex levels. Large cuttings, of 0.5 m or more, need to be dried out for at least three weeks. Too much latex could rot the plant. Strike the cutting in coarse sand. The best time to strike cuttings are August, September and October (southern hemisphere).

Euphorbia stellispina grows easily and rapidly. The plants are not difficult to cultivate and look after. They also make ideal pot plants and look very good in a ceramic pot in a courtyard.