Recommended Temperature Zone:
sunset: 9b-11
Minimum Avg. Temperature: 50°F (10°C)
Heat Tolerance: Light shade in Phoenix in summer
Sun Exposure: Light shade to full sun
Origin: Mexico (Coahuila, Nuevo Leon) at over 7000 feet elevation (2200 m)
Growth Habits: Solitary or slowly clumping, flattened or globose cactus, up to 4 inches tall (10 cm), 3 inches in diameter (8 cm); 5 to 7 ribs, either tuberculate or slightly wavy, separated by broad furrows; small areoles with whitish felt, 0.2 inches apart (5 mm); 1 to 3 thin yellow spines, 3 to 15 mm long
Watering Needs: Keep drier in winter
Propagation: Seeds, cuttings
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