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Acanthocalycium spiniflorum
Scientific Name: Acanthocalycium spiniflorum (K. Schumann.) Backeberg in Backeberg & F.M. Knuth
Synonym: Echinopsis violacea, Echinocactus spiniflorum, Echinopsis spiniflora, Lobivia spiniflora, Acanthocalycium spiniflorum, Acanthocalycium violaceum
Family: Cactaceae
Acanthocalycium  spiniflorum
Acanthocalycium spiniflorum at the DGB in Phoenix, mid May.
Frost Tolerance: 25 F (-4 C), 'violaceum' clones are resistant to 15 F (-10 C) for short periods

Minimum Avg. Temperature: 45 F (7 C)

Sun Exposure: Full sun to part sun, tolerates intense sun light

Origin: Argentina (Cordoba)

Growth Habits: Solitary to clumping, up to 2 feet tall (60 cm), 6 inches in diameter (15 cm); 16 to 20 acute ribs; 10 to 20 spines

Watering Needs: Little water in winter, regular water in summer

Propagation: Seeds

The Acanthocalycium spiniflorum has white to violet flowers in summer (the pink flowers justified the forma violacea). The flowers measure 1.5 inches in diameter (4 cm) or more. Even when not blooming, the attractive spination makes it an interesting cactus.

Cultural Practices:
Water your Acanthocalycium sparingly. Wait for the well draining soil mixture to be rather dry before watering again. If it loses its roots, let the stem dry for a few days before replanting.

Blooming Habits:
Large 1.6 inches (4 cm) or more, pastel pink or white flowers. It starts blooming at around 2.4 inches in diameter (6 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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