Coryphantha clavata
Coryphantha clavata at the HBG (HBG 56981) Recommended Temperature Zone: USDA: 9b-11 Minimum Avg. Temperature: 50°F (10°C) Heat Tolerance: Light shade in Phoenix in summer Sun Exposure: Full sun to partial shade Origin: Mexico (San Luis Potosi, Guanajuato, Hidalgo) Growth Habits: Columnar or conical plant, generally solitary, up to 12 inches tall (30 cm), 3 inches in diameter (7.5 cm); tubercles up to 0. More