If you have a sunny, south-facing window in your home or apartment, try growing indoor cactus. Indoor cactus are easy. Many grow slowly over time, don't require frequent watering and tolerate our dry, indoor air conditions in winter. Use cactus potting soil, and water throughly, but infrequently, and don't mist the plants. It's good to choose the right cactus. While all cactus are considered succulents, not all succulents are cactus. Cactus have growth points or areoles where spines, hairs and