Stapelia gettliffei

Stapelia gettliffei is a moderately easy succulent to grow if its two non-negotiable requirements are met: very fast-draining soil and minimal winter watering. Beginner growers who overwater or use standard potting mix are likely to lose stems to rot. Beyond those basics the plant is forgiving and undemanding.

Plants produce fleshy, four-angled, spineless green stems that grow upright to about 20–30 cm before sprawling outward, forming a clump up to roughly 60 cm across at maturity. Growth is moderate under good conditions. Individual stems are readily replaced by new offsets from the base.

Stapelia gettliffei is native to a narrow band of southeastern Africa: southeastern Botswana, western Mozambique, and the Mpumalanga province of South Africa (formerly part of the Transvaal region). The genus as a whole is predominantly southern African.

Stapelia gettliffei tolerates warm to hot summers but needs a distinct cool, dry winter rest to perform well. Minimum winter temperature when kept dry is around 10°C (50°F). It is not frost-hardy and should be kept above freezing at all times; USDA hardiness zones 9–10 define its outdoor range.

As a succulent from seasonally arid southern Africa, S. gettliffei prefers low ambient humidity. High humidity combined with cool temperatures increases the risk of stem rot. Good airflow around plants is beneficial, especially during winter.

During the growing season (spring through autumn) water moderately, allowing the compost to dry between waterings. In autumn, as temperatures drop, gradually reduce watering. Over winter keep the plant almost completely dry at cool temperatures (around 10–13°C). Resume watering slowly in spring as new growth appears.

Stapelia gettliffei flowers produce a strong odour resembling rotten flesh — a phenomenon called carrion mimicry. This scent is the plant's pollination strategy, attracting blow flies that mistake the bloom for a carcass. Indoors, the smell can be unpleasant; individual flowers can be removed as they open to avoid this.

Flowers are star-shaped with five lobes and feature a hairy, fleshy, richly textured surface with complex colouring. Like other stapelias, the blooms are designed to deceive carrion flies. Flowering typically occurs in late summer to autumn (September–October). The flowers are the plant's primary ornamental feature, though the accompanying scent can be pungent.

Stapelia gettliffei is sometimes listed under the synonym Ceropegia gettliffei (Pott) Bruyns in taxonomic treatments that lump stapelioid genera into Ceropegia. No cultivated varieties or cultivars are documented in the sources consulted.

Stapelia gettliffei can be grown outdoors year-round only in frost-free climates (USDA zones 9–10). In cooler regions it is best treated as a container plant that spends summers outdoors in a sheltered, sunny spot and overwinters indoors in a cool, bright, dry location.

Stapelia gettliffei grows well in containers and should be potted in very fast-draining gritty compost. Repot when the plant outgrows its pot or when the compost becomes compacted, typically every 2–3 years in spring. Clay pots are preferred by some growers as they allow moisture to evaporate through the sides, reducing rot risk.

The fleshy, spineless stems of Stapelia gettliffei collect dust. Gently wipe stems with a soft dry cloth or a very lightly dampened cloth. Avoid getting excess water into the growing points or letting moisture sit on the stems, as this can encourage rot.

Propagation is easy: take stem cuttings in spring or summer, allow the cut end to callous for a day or two, then insert into dry gritty compost. Clumps can also be divided at repotting time. Avoid watering newly potted cuttings for the first week or so to prevent rot at the base.

Yellowing or softening of stems in S. gettliffei usually indicates overwatering or waterlogged soil. Ensure the compost dries out fully between waterings and that the pot has excellent drainage. Root mealybugs can also cause yellowing by damaging roots.

Brown, mushy, or shrivelled stems can indicate root rot (too much water) or, if dry and corky, simply natural ageing of older stem tissue at the base. Check roots if rot is suspected; remove affected tissue and repot into fresh dry compost.

Stems may flop or droop naturally as they elongate, which is normal growth habit for the genus. However, sudden wilting or softening of previously firm stems often signals root damage from overwatering or root mealybug infestation.

Slow or stalled growth is often caused by insufficient light, excessive watering during the growing season, or keeping the plant too cool in summer. Ensure full sun or bright light and allow the compost to dry between waterings during the active season.

The main pests are mealybugs and root mealybugs. Surface mealybugs can be treated with isopropyl alcohol on a cotton swab or systemic insecticides (imidacloprid-based products). Root mealybugs require unpotting, washing roots, and repotting in fresh dry compost. Fungal stem rot following pest damage is also a risk; ensure good ventilation and avoid overwatering.

Stapelia gettliffei is pollinated by blow flies (carrion flies). The flowers produce a rotting-flesh odour and visual cues (hairy, mottled surface) that mimic a decomposing animal. Flies are lured in, lay eggs near the corona, and transfer pollen between flowers in the process. Seeds, if produced, are contained in spindle-shaped follicles typical of the Apocynaceae family.

Stapelia gettliffei should be watered regularly, allowing the soil to dry out between waterings.

Stapelia gettliffei loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.

Stapelia gettliffei requires abundant, bright, and direct light to thrive. The best placement for this plant is within one foot of a window to ensure it receives enough light. If you live in an area with more extreme weather, such as hot summers or cold winters, you may need to adjust the placement of the plant accordingly. During hot summer months, it is important to place the plant away from full sun, as this can cause the leaves to yellow or burn. During cold winter months, it is best to move the plant closer to the window to take advantage of the extra light that can help it survive. By keeping an eye on the current weather in your area, you can make sure your Stapelia gettliffei is always in the right place to thrive.

Repotting the Stapelia gettliffei should be done either when it has doubled in size or on a yearly basis, whichever occurs sooner. Fresh potting soil with all the required nutrients, refreshed annually, will provide the plant with all the necessary sustenance, making the use of fertilizer unnecessary. Keep in mind that plants receive their energy from the sun, not fertilizer.

There is no verified data on the toxicity of this plant in the records of Ploi. If any person, including yourself, a family member, or a pet, consume plant material with an uncertain toxicity level, it is advisable to seek the advice of a healthcare expert.