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

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 sharply pointed greyish spines are arranged in pairs continuously along the greyish margins and appear at the nodes.

Flower: The reddish male and female flowers are arranged in a cup-shaped involucre-like organ (cyathia) that has small red-grey bracts. The male flower has a single stamen and the female consists of a 3-celled pistil. The flowers are arranged in a terminal cyme and appear during midsummer. 

Fruit: The 3-valve brown oval capsule is an explosive schizocarp and contains the numerous seeds that are viable but the plant is commonly reproduced vegetatively to maintain true to type.