Thelocactus macdowelii
Scientific Name: Thelocactus macdowelii (Rebut ex Quehl) W.T. Marshall
Synonym: Echinocactus macdowelii, Echinomastus macdowelii, Neolloydia macdowelii, Thelocactus conothelos var. macdowellii , Thelocactus macdowellii
Family: Cactaceae
Thelocactus macdowellii at the Desert Botanical Garden in January
USDA: 9-11
Frost Tolerance: Hardy in Phoenix to 20° F (-7° C)
Heat Tolerance: Afternoon shade in summer in Phoenix
Sun Exposure: Full sun
Origin: Mexico (Nuevo León, Coahuila)
Growth Habits: Slowly clumping globular cactus, up to 4 inches tall (10 cm), 4 inches wide (10 cm)
Watering Needs: Moderate water
Propagation: Seeds
Thelocactus macdowellii in mid March at B&B Cactus Nursery
Blooming Habits:
The Thelocactus macdowellii has large, 2.5 inches wide (6 cm), pink flowers in mid to late winter.
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