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Astrophytum capricorne (Goat’s Horn Cactus)

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Scientific Name

Astrophytum capricorne (A. Dietr.) Britton & Rose

Common Names

Bishop’s Cap, Bishop’s Hat, Goat’s Horn, Goat’s Horn Cactus

Synonyms

Echinocactus capricornis (basionym), Astrophytum capricorne var. capricorne

Scientific Classification

Family: Cactaceae
Subfamily: Cactoideae
Tribe: Cacteae
Genus: Astrophytum

Description

Young Astrophytum capricorne cacti are globular, they soon become ovoid, and eventually columnar up to 4 feet (1.2 m) tall and 4 inches (10 cm) in diameter. The epidermis is covered with the typical white woolly flecks. Usually 8 ribs, up to 10 spines, grey to brown wired, twisted, curved, flattened, up to 7 cm long. Sweet smelling flower, up to 3 inches (7.6 cm) wide, yellow with a red center. Reddish fruit, covered with flattened spines, up to 1 inch (2.5 cm) in diameter.

Hardiness

USDA hardiness zone 9a to 11b: from 20 °F (−6.7 °C) to 50 °F (+10 °C).

How to Grow and Care

Goat’s Horn Cactus is a desert cactus, therefore it loves sun and will grow well if provided with plenty of direct sunshine. To young specimens should be provided with indirect sunlight. With inadequate light which could result in poor growth and unnatural shape.

Use alkaline, lime based soil with good drainage as this species is rot prone.

It thrive in average room temperatures between 60 and 75 °F  (16 and 24 °C ) from spring until fall. From late autumn to late winter give them a rest winter at temperatures between 45 and 50 °F (7 and 10 °C).
Normal indoor humidity is fine for Goat’s Horn Cactus. Provide good air ventilation for healthy growth.

During the active growth period water this cactus moderately, but allow the top 3/4 of the mixture to dry out thoroughly between waterings. During the rest period give only enough water to prevent the mixture from drying out.… – See more at: How to Grow and Care for a Goat’s Horn Cactus

Origin

Native to northern Mexico (Coahuila, Nuevo Leon, San Luis Potosi).

Subspecies, Varieties, Forms, Cultivars and Hybrids

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