The most popular cultivars of Gymnocalycium mihanovichii friedrichii/hibotan are varied mutants that completely lack chlorophyll, exposing the red, orange, or yellow pigmentation. These mutant strains are often grafted onto the Hylocereus cactus, and the combined plant is called a "Moon Cactus".

Moon Cactus Light preference: indoor plants should be partially shielded from bright sunlight by slatted blinds during the brightest part of the day. Watering Moon Cactus: Water deeply and then allow the soil to completely dry to the base of the pot before reapplying moisture. Suspend watering in the winter months and repot in spring to reintroduce nutrient-dense soil. Potting Moon Cactus: The moon cactus prefers to have a crowded home, which means you can repot it in the same pot for several years.

The life of the moon cactus can be extended by re-grafting it onto a fresh rootstock.