Gymnocalycium mihanovichii v. rubrum
Gymnocalycium mihanovichii v friedrichii (green flower)

Light: The moon cactus plant requires bright indirect sunlight. Full sun will actually harm this container plant, so keep it out of direct sunlight for long periods of time.

Water: Water moon cactus thoroughly, then let the plant dry out between waterings.

Fertilizer: You don't need to regularly fertilize your moon cactus plant, but you should dose it with a cactus fertilizer every month during its growing season (April to September).

Temperature: The tiny moon cactus won't do well in very cold temperatures, so bring it inside to overwinter during the cold winter months.