Caralluma acutangula is a robust, densely branched, cactus-like, succulent, 40-100 cm tall with a large cluster of purple-black flowers crowded in dark globose heads on stem tips. It is one of the largest stapeliads.
Caralluma acutangula is relatively easy to grow. It needs regular watering, especially during the hottest summer days; provide also some light watering if the green house temperatures in winter are elevated. Either excessive or very scarce watering can induce rot. Winter temperatures must be kept over 10° C. But it can withstand winter night-time temperatures down to about 5°(or less) Celsius for short period. Freezing temperatures are fatal. It has a great advantage if grown in very strong light but sheltered from full sun.