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Stapelia grandiflora (Giant Toad Plant)

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Scientific Name

Stapelia grandiflora Masson

Common Names

Giant Toad Plant, Carrion Plant, Carrion Flower, Starfish Flower, Giant Zulu, Starfish Cactus

Synonyms

Stapelia ambigua, Stapelia flavirostris

Scientific Classification

Family: Apocynaceae
Subfamily: Asclepiadoideae
Tribe: Stapeliae
Genus: Stapelia

Description

Stapelia grandiflora is a tufted, creeping or procumbent, cactus-like plant that trail and hang down over the pot. It can form large clusters up to 20 inches (50 cm) in diameter. The stem is up to 4 inches (10 cm) tall, pale green or reddish and slightly furrowed with upright hooks along the ridges. The flowers are large and showy, starfish-shaped and up to 6 inches (15 cm) across. They are intermittently produced throughout the late summer and fall. The fruits are typical twin seed horns (follicles), which are decorative in themselves and often don't appear until a year later.

Photo via wikipedia.org

Hardiness

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

How to Grow and Care

Several species are fairly easy to grow. Others, often those with slightly hairy stems and the more unusual flowers, are more challenging and require careful watering (with some fertilizer) during the growing season and complete withdrawal of water during the winter months. A minimum winter temperature of 10°C (50°F) is acceptable, providing that plants are kept absolutely dry. A heated growing bench or incubator may help delicate plants to get through the colder months. However, many species live under shrubs in habitat and prefer light shade rather than full sun.

A gritty succulent soil mix is essential and clay pots are advisable for the more delicate species. Some growers prefer a mineral-only soil to minimize the chance of fungal attack on the roots. A layer of grit on the surface of the soil prevents moisture from accumulating around the base of the stems.

Keeping Stapelias and their roots free of pests such as mealy bugs is the real key to success as fungal attack often occurs as a result of damage to stems by insects.

Learn more at How to Grow and Care for Stapelia.

Origin

Stapelia grandiflora is native to South Africa (Northern Cape, Eastern Cape and Free State).

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