Mammillaria swinglei

Scientific Name: Mammillaria swinglei (Britton & Rose) Boed.
Synonym: Mammillaria inaiae, Neomammillaria swinglei
Family: Cactaceae

Recommended Temperature Zone:
USDA: 9-11

Frost Tolerance: Hardy to 20°F (-7°C)

Sun Exposure: Light shade to full sun

Origin: Mexico (Sonora)

Growth Habits: Solitary, or slowly basally branching, 4 to 10 inches tall (10-25 cm), 1.2 to 2 inches in diameter (3-5 cm); cylindrical tubercles, 0.3 to 0.4 inch long (7-10 mm), 0.2 to 0.3 inch in diameter (5-7 mm); axils with numerous bristles; 1 to 4 brown needle-like central spines; 11 to 18 white needle-like radials, 0.3 to 0.6 inch long (7-14 mm) obscuring the tubercles.

Watering Needs: Rot Prone

Propagation: Seeds

Now often considered a synonym of Mammillaria sheldonii.

Blooming Habits:
Purplish pink flowers in April, 1.2 inches in diameter (3 cm). White and yellow varieties are mentioned.