Ball Cacti Succulent: Native to central South America, they are easy to care for, making them excellent beginner cacti. Their round appearance is to credit for their shapely name, and they can grow in clusters up to over a foot wide. While they prefer a warm and dry climate, they are more adaptable than some of their cacti cousins, able to withstand temperatures that hover around freezing as long as they're kept dry.
 
Ball cacti are moderate growers, adding about 4 inches to their height each year. Older plants will frequently produce flowers in beautiful shades of yellow, red, orange, or pink, and all varietals feature ridges of spikes that start out white and grow to a yellow-brown with age.