Propagation
Take stem cuttings from spring to summer. Allow the cuttings to dry and form a callus (usually 3-weeks) before planting into a very well-drained gritty media.

Sow fresh seed in flats and place in a warm sunny position. Prick out when large enough to handle and pot up.
Division of the clump during spring.

Note:
Care should be taken when selecting a site as all Euphorbia's contain white sap that causes skin and eye irritation. Be certain to wash your hands with soap and water after handling plant material.

Botanic information
Leaf: The tiny leaves are early deciduous and not commonly seen. The solitary red-brown to greyish spines appeared between the tubercles. They are up to 7 mm (¼ in) long and have a whorl of 3-5 pungent barbs.

Flower: The pale yellow male and female flowers are arranged in a cup-shaped involucre-like organ (cyathia) that has small green bracts. The male flower has a single stamen and the female consists of a 3-celled pistil. The flowers are solitary and appear towards the top of the plant from late-spring to midsummer. 

Fruit: The 3-valve brown oval capsule is an explosive schizocarp and contain a single seed per compartment and are viable but the plant is commonly reproduced vegetatively to maintain true to type.