Mother of Hundreds
Scientific Name: Mammillaria compressa DC.
Synonym: Cactus compressus, Cactus conopseus, Mammillaria angularis, Mammillaria angularis var. compressa , Mammillaria angularis, Mammillaria bernalensis, Mammillaria centricirrha var. conopsea , Mammillaria cirrhifera, Mammillaria conopsea, Mammillaria esseriana, Mammillaria tolimensis, Neomammillaria compressa
Family: Cactaceae
Sunset®: 13-24, 29, 30
USDA: 8-11
Frost Tolerance: Hardy to 20° F (-6°C), some reports give it hardy only to 28° F (-2°C)
Heat Tolerance: Light shade in summer in Phoenix
Sun Exposure: Full sun
Origin: Central Mexico (Hidalgo, Queretaro, San Luis Potosi)
Growth Habits: Clumping globular cactus, stems are up to 4 inches in diameter (10 cm), up to 10 inches tall (25 cm)
Watering Needs: Regular water in summer
Propagation: Offsets, seeds
The Mammillaria compressa clumps readily to make a huge mound, one of the largest of all the Mammillarias.
Blooming Habits:
The Mammillaria compressa has intense deep red flowers, 0.4 inches in diameter (1 cm) in winter. The flowers are rare in cultivation.
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