This cactus is easy to care for and thrives on neglect. The most important factor in keeping the bunny ear cactus happy and thriving is ensuring that it has enough sunlight and does not get overwatered.
 
The bunny ear cactus requires consistent bright, direct sunlight and when grown as a houseplant, it should be placed in the sunniest spot in your home. Ideally, this cactus should receive between six to eight hours of direct sunlight each day. When grown indoors, this usually means that it should be placed in a south or west-facing window, or you can use a grow light to provide supplemental light. When grown outdoors, ensure that the cactus is not planted in a location that is not shaded.