Cacti may be found in a wide range of forms, sizes, colorations, and blooming patterns. It is possible to cultivate smaller cacti within using containers, while bigger cacti may be grown outside in certain conditions. The hardiness zones designated by the United States Department of Agriculture change depending on the species. The beavertail cactus, which may have double-flowered pink or yellow blossoms, and the barrel-type cacti, which can grow to reach over 12 inches in diameter, are two examples of the types of cacti that thrive particularly well in USDA zones 5 through 10. Large cacti that are kept outside might be difficult to replant, although repotting houseplants is a simple process.