Synonyms:

No officially recognized synonyms.

Habitat:

Stapelia leendertziae f. cristata is a horticultural form that does not occur in nature but originates from a fasciated mutation of the typical species, maintained and propagated in cultivation. The original species, however, grows in the arid regions of southern Africa, among rocks and well-drained sandy soils, often in partial shade under shrubs. In its native habitat, the hot, dry climate and irregular rainfall favor its remarkable drought tolerance.

Description:

The genus name Stapelia honors the Dutch botanist Johannes van Stapel (1602-1636), who was the first to describe and illustrate plants of this genus. The specific epithet leendertziae pays tribute to the South African botanist and plant collector Mrs. Leendertz, who first gathered specimens of the type species. The Latin term cristata (“crested”) refers to the characteristic fasciated mutation of the stem, which causes its flattened and wavy growth.

Stapelia leendertziae f. cristata belongs to the genus Stapelia and to the family Asclepiadaceae. It exhibits a fasciated, flattened growth, giving the stems a sinuous, wavy appearance reminiscent of a crest or fan. The fleshy stems, bright green with purplish tones in full light, lack true spines but bear pointed tubercles arranged along the ridges. Its succulent tissues allow it to store water, enabling the plant to withstand long periods of drought.

During the warm season, it produces large solitary flowers at the base of the stems. The bell-shaped corollas, up to 10-15 cm wide, are dark purple to brownish-violet; the inner surface – rugose, velvety, and covered with short hairs – gives the flower a fleshy texture. The strong, unpleasant odor attracts flies and other necrophilous insects responsible for pollination.
After flowering, elongated fruits develop and, once mature, split open to release tufted seeds.

Cultivation:

Although a generally robust plant, the crested form requires a little extra care due to its particular structure.

This plant needs a very well-draining substrate to prevent water stagnation and root rot. A light, mineral-based mix with little peat and plenty of inert material such as pumice, coarse sand, or perlite is recommended. A good cactus soil works as well, provided it is further lightened. Always use pots with drainage holes to allow excess water to flow out quickly.

Water moderately during the growing season, from spring to early autumn, allowing the soil to dry out completely between waterings. In winter, when the plant enters dormancy, watering should be reduced to a minimum, slightly moistening the soil only if the stems begin to shrivel.

It prefers a bright position, with filtered sunlight or full sun during the cooler hours, which promotes compact growth and enhances the stems’ purplish hues. Avoid intense direct light, especially in summer, as it can cause sunburn. During the hottest months, provide light partial shade, while in winter it can be placed in full sun. Indoors, keep it in a bright, well-ventilated spot, ideally near a south- or west-facing window.

This plant benefits from light, regular feeding during the growing season, from spring to early autumn. Fertilize every 4-6 weeks with a liquid fertilizer for succulents, diluted to half strength. Suspend feeding during the winter dormancy period.

Repot every 2-3 years, preferably in spring, when growth resumes. Repotting serves mainly to refresh the substrate, which tends to compact over time and reduce drainage. Use a slightly larger pot than the previous one, always with drainage holes, and handle the fragile stems carefully.

It is not considered toxic to humans or pets; however, like other Apocynaceae, it may contain mildly irritating substances. It is best to avoid contact with the sap, which can cause slight skin irritation in sensitive individuals.

It is generally resilient, but it may suffer from root or stem rot if the substrate retains too much moisture. Good drainage and proper watering are essential to prevent these issues. Common pests include mealybugs and aphids, which may hide between the stems or at the base of the crests. In case of infestation, treat promptly with specific products for succulents or natural remedies such as soft soap solutions.

Care tip: the crested form of Stapelia leendertziae tends to grow quickly, but over time the stems age and lose vigor. To keep the plant healthy and attractive, it is advisable to renew it periodically by taking well-formed cuttings every two years and rooting them in fresh substrate.

Propagation:

Stapelia leendertziae f. cristata is propagated by stem cuttings, as the crested form does not retain its characteristics when grown from seed. Cuttings should be taken in spring or summer, allowed to dry for a few days in a shaded place, and then planted in a well-draining, slightly moist substrate. Rooting occurs within a few weeks, especially if temperatures remain around 68 °F (20 °C).

Curiosity:

This plant, like the typical species, employs a remarkable strategy of deception to attract pollinators. Its flowers, which smell of rotting flesh, lure carrion flies that lay their eggs on the flower’s surface. The larvae do not survive, but while visiting, the insects transfer pollen, ensuring the plant’s reproduction.

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