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Cereus hildmannianus – Hedge Cactus, Queen of the Night

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Scientific Name

Cereus hildmannianus K. Schum.

Common Names

Hedge Cactus, Queen of the Night, Andes Organ Pipe, Peruvian Apple, Spiny Tree Cactus

Synonyms

Cereus peruvianus (misapplied), Cereus uruguayanus

Scientific Classification

Family: Cactaceae
Subfamily: Cactoideae
Tribe: Cereeae
Genus: Cereus

Description

Cereus hildmannianus is a columnar slow growing cactus branching form the base, up to 30 feet (9 m) tall, clump up to 15 feet (4.5 m) in diameter. The stem is blue-green in color when young, becoming duller green with age, up to 8 inches (20 cm) across, with 4 – 6 (8) ribs which are divided into segments. Usually there are no spines on the younger stems, the spines grow progressively as the stem ages. The white flowers are very large, up to 12 inches (30 cm) long and up to 6 inches (15 cm) in diameter, followed by large, up to 2.5 inches (6 cm) in diameter, egg shaped fruits which are red when ripe.

Cereus hildmannianus - Hedge Cactus, Queen of the Night

Hardiness

USDA hardiness zone 8b to 11b: from 15 °F (−9.4 °C) to 50 °F (+10 °C).

How to Grow and Care

Like most cacti, Cereus are fairly low-maintenance and hardy. Make sure they receive enough water without becoming waterlogged, especially during the summer, and fertilize them for best results. If the roots have become black or overly soft, the cactus could be experiencing root rot – cut away the affected parts and replant. Like all cacti, give them lots of direct sunlight, especially during the summer. Well-drained soil is best, and most Cereus perform well in a soil that contains some organic material… – See more at: How to Grow and Care for Cereus.

Origin

Native to Brazil (Mato Grosso do Sul, Minas Gerais, Parana, Rio Grande do Sul, Rio de Janeiro, Santa Catarina, Sao Paulo), Bolivia, Argentina (Buenos Aires, Entre Rios) Paraguay and Uruguay.

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