Fill your pot halfway with standard quality potting soil, then place the zebra cactus in the pot. Add another thin layer of soil to cover cactus root structures.
Place the potted cactus near a window where it receives partial light, ideally three to four hours of daily direct light. Zebra cactus prefers nighttime temperatures around 55 degrees Fahrenheit.
Water the cactus only when soil is completely dried out -- only once or twice a week. During spring and summer, water two to three times a week.
Fertilize the zebra cactus twice a year, in April and July, with a low-nitrogen, water-soluble fertilizer.