The small plants are globose to cylindrical and are so named for the chinlike protuberance below each spine-bearing areole (special bud) on the ribs. The showy diurnal flowers are most often white or cream, with shades of pink, yellow, or red in some species and varieties.
Grafted cactus, requires support
Unique, vibrant colors
Dos
Water sparingly<br> Fertilize regularly during growing season<br> Repot every 2-3 years
Don'ts
Avoid overwatering<br> Avoid extreme temperatures<br> Protect from frost