Will Coral Cactus Pups Develop Crests?

Propagation of Euphorbia lactea 'Cristata': Crest Inheritance Uncertain

Owner removed two "babies" from a crested coral cactus, rooted them, and asks if they'll develop the distinctive fan-like crest.

Answer

Crests (cristate growth) are mutations at the growing apex. Causes are unknown (radiation, injury, chemicals). Inheritance is highly variable; no way to force cresting. Pups may grow normally or eventually crest—only time tells.

Current Care

Euphorbias are dormant in winter; water sparingly. In spring, increased watering and light will reveal growth habit.