Commonly called crown cacti, the Rebutia genus includes some of the most popular and easiest to grow cacti, making them perfect for beginnings. These plants are native to high elevations in South America, where they grow in clusters on the mountains. They are frequent bloomers and readily send out offshoots, so even plants only two or three years old will form an attractive cluster of small plants. Their flowers typically emerge from the base of the plant or between individual plants in the same cluster, as opposed to the crown of the plant. In terms of culture, they are not particularly difficult and like bright light and light moisture.