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Miniature Barrel Cactus
Scientific Name: Thelocactus setispinus (Engelm.) E.F.Anderson
Synonym: Echinocactus setispinus var. cachetianus, Hamatocactus setispinus var. setaceus, Echinocactus setispinus var. setaceus, Echinocactus muehlenpfordtii, Echinocactus setispinus var. muehlenpfordtii, Echinocactus setispinus var. mierensis, Thelocactus setispinus var. mierensis, Thelocactus setispinus var. setaceus, Hamatocactus setispinus var. hamatus, Hamatocactus setispinus var. cachetianus, Thelocactus setispinus var. cachetianus, Hamatocactus setispinus, Thelocactus setispinus, Ferocactus setispinus, Echinocactus setispinus, Echinocactus hamatus, Thelocactus setispinus var. hamatus
Family: Cactaceae
Miniature Barrel Cactus (Thelocactus  setispinus) Recommended Temperature Zone:
USDA: 9-11

Frost Tolerance: Hardy to 10-20F depending on the origin (-12 to -7C)

Heat Tolerance: Do better with some shade in summer in Phoenix

Sun Exposure: Full sun to light shade

Origin: USA (south Texas), Mexico (Coahuila, Nuevo Leon, Tamaulipas)

Growth Habits: Solitary or slowly offsetting, up to 6 inches tall (15 cm), 4 inches in diameter (10 cm); around 13 high wavy ribs; areoles 0.4 to 0.5 inch long, with short wool; 1 to 3 central spines; 12 to 16 radials, white or brown, up to 1.6 inches long (4 cm)

Watering Needs: Summer grower


There are a number of forms with flower color varying from brilliant violet to carmine red.

Miniature Barrel Cactus (Thelocactus  setispinus)

Miniature Barrel Cactus (Thelocactus  setispinus)

Blooming Habits:
Yellow flowers with darker centers, 1.5 inches across (4 cm), 1.6 to 2.8 inches long (4-7 cm). The fruit is red, oval, 0.3 to 0.4 inch long (8-11 mm)

Fruiting Habits:

Check for Field Collection numbers at Ralph Martin's Site

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Desert-Tropicals is dedicated to provide gardening advice, gardening ideas, and information about flower of all kind for landscape and collections. We try to check carefully the identification of the plants on the illustrations as well as the other information from the page, but occasionally errors do occur. if you notice anything that needs to be changed please contact us. Thanks.

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