Mammillaria hahniaia, more commonly known as old lady cactus. It is a very globular cacti with spherical stems. It has very white hairs and a circle-like crown of bright magenta flower, which causes a beautiful contrast in colors. This is a perfect ornamental plant for any use.

Recommended temperature zone: USDA: 9b-11
Frost tolerance: Hardy to 20°F (-6°C)
Minimum avg. temperature: 50°F (10°C)
Sun exposure: Light shade
Origin: Mexico (Guanajuato)
Watering needs: Water sparingly, needs good drainage
Propagation: Seeds