Crown of Thorns Mastery

The Crown of Thorns is technically a succulent, not a true cactus. It wants more water than a standard cactus, but much less than a regular houseplant. If it gets too dry, it will drop all its leaves to conserve water—but don't throw it out! Once you resume watering, it will grow them all back. Be extremely careful when pruning: it bleeds a thick, white latex sap that is highly toxic and irritating to the skin and eyes.