Coryphantha pycnacantha
Scientific Name: Coryphantha pycnacantha (Mart.) Lem.
Synonym: Coryphantha andreae, Coryphantha connivens, Mammillaria andreae, Mammillaria pycnacantha
Family: Cactaceae
USDA: 10-11
Frost Tolerance: Semi hardy in Phoenix
Heat Tolerance: Light shade in summer in Phoenix
Sun Exposure: Full sun to light shade (in summer)
Origin: Oaxaca and Veracruz states, Mexico
Growth Habits: Clumping globular cactus, up to 4 inches tall (10 cm), 2.8 inches in diameter (7 cm); tubercles 0.8 inches tall (2 cm), 1 inch in diameter (2.5 cm); 2 to 7 curved central spines; about 8-14 radials
Watering Needs: Little water when in a growing period
Propagation: Seeds, divisions
The species name "pycnacantha" comes from the Greek for "with dense thorns".
Coryphantha connivens at the Huntington Gardens in early July
Blooming Habits:
Light yellow flowers, up to 2 inches in diameter (5 cm).
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