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Cleistocactus smaragdiflorus
Scientific Name: Cleistocactus smaragdiflorus (F.A.C. Weber) Britton & Rose
Synonym: Cleistocactus rojoi, Cleistocactus smaragdiflorus, Cereus baumanni var. smaragdiflorus, Cleistocactus colubrinus var. smaragdiflorus, Cereus colubrinus var. smaragdiflorus, Cereus smaragdiflorus
Family: Cactaceae
Cleistocactus  smaragdiflorus
Cleistocactus smaragdiflorus at the Wallace's collection in Phoenix in April
Recommended Temperature Zone:
USDA: 9b-10

Minimum Avg. Temperature: 55F (12C)

Heat Tolerance: Light shade in Phoenix in summer

Sun Exposure: Light shade to full sun

Origin: Argentina, Bolivia

Growth Habits: Generally erect, densely branching at the base, 6.5 feet tall (2 m); stems up to 2 inches in diameter (5 cm); 12 to 16 ribs; 4 to 6 central spines, 10-14 radials

Watering Needs: Water generously during the summer.


Cleistocactus rojoi at the HBG (HBG 40744)

Close up of a growing tip of the same Cleistocactus rojoi

Blooming Habits:
Diurnal tubular flowers, red with a green opening, up to 2 inches long (5 cm)

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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