Adenium multiflorum
Impala lily
Adenium multiflorum, known as the 'impala lily' or 'South African desert rose', is a caudiciform succulent native to the arid savanna of southern and southeastern Africa, distributed across Mozambique, Zimbabwe, Eswatini, and northeastern South Africa (including Kruger National Park). It differs from A. obesum by blooming in winter — in the full dry season, when the branches are completely bare of leaves — and by its vividly colored flowers with white margins and strongly contrasting carmine centers. The spectacle of a specimen in bloom, with hundreds of flowers on leafless branches, is truly striking.
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© Ton Rulkens
CC BY-SA 2.0
Overview
| Category | Classification |
|---|---|
| Family | Apocynaceae |
| Genus | Adenium |
| Growth Habit | Caudiciform succulent shrub; very swollen, gray basal caudex with erect branches and an open crown; deciduous during the dry season |
| Conservation Status | Least Concern (LC) — IUCN; local populations reduced by illegal collection of wild specimens |
| pH Target | 6.0–7.0 |
| Type | Porous, stony mineral substrate with excellent drainage; tolerates very poor rocky soils similar to those of the African savanna |
Origin & Habitat
Morphology
Globose to irregular basal trunk, silver-gray with a smooth, slightly shiny texture. In the wild it can reach 1.5 m in diameter in very mature specimens. Stores large quantities of water and nutrients, enabling flowering during the full dry season before leaves resprout.
ecoOblanceolate to spatulate leaves 5–10 cm long, bright green, clustered at branch tips. Appear only during the rainy season (summer in the southern hemisphere) and drop completely at the onset of the dry season. This winter deciduousness is a diagnostic characteristic that distinguishes A. multiflorum from other species in the genus.
ecoFunnel-shaped flowers 4–7 cm in diameter, with 5 petals white to pink at the margins and a carmine or deep red center forming a very striking five-pointed star. The tube is dark red. They bloom in clusters of 10–30 simultaneous flowers per branch, directly on leafless branches. Flowering occurs in winter (May–August in the southern hemisphere).
ecoFleshy and extensive root system, similar to A. obesum, with thick main roots that store water alongside the caudex. Lateral roots spread widely through the rocky savanna soil to capture maximum water during brief seasonal rains.
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Requirements
Soil & Substrate
Type
Porous, stony mineral substrate with excellent drainage; tolerates very poor rocky soils similar to those of the African savanna
groups Beneficial Associations
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Propagation Strategy
- 1 Take cuttings in summer when the plant has leaves and is in full growth.
- 2 Cut semi-woody branches 10–15 cm long with a sterile blade; wear gloves to protect from the sap.
- 3 Let the cut dry for 7–10 days in a warm, ventilated place.
- 4 Place in rooting substrate (pure perlite) with basal temperature of 28–30 °C.
- 5 Keep substrate barely moist; the cutting does not need foliage to root.
- 6 Roots emerge in 4–8 weeks; transplant when the root system is visible.
- 1 Use fresh seeds harvested in summer before the pods open.
- 2 Soak in warm water (30 °C) for 6–8 hours to soften the seed coat.
- 3 Sow on perlite + volcanic sand substrate at 0.5–1 cm depth.
- 4 Maintain temperature of 30–35 °C with high ambient humidity until germination.
- 5 Seeds germinate in 7–14 days; reduce humidity when seedlings appear.
- 6 Gradually acclimate to full sun over 2–3 weeks to prevent sunburn.
To ensure the characteristic winter flowering, subject the plant to near-total drought from March to June (in the northern hemisphere), mimicking the dry season of the African savanna.
Watering during the winter flowering period when the plant is leafless: destroys the flowers and causes rot.
Every 3–4 years in spring, just before the start of the leaf growth and flowering season
Liquid fertilizer high in phosphorus and potassium (e.g., 10-30-20) every 3 weeks during the foliage season (summer). Do not fertilize during winter dormancy or during leafless flowering.
Uses & Applications
Precautions / Toxicity
IMPORTANT: Adenium multiflorum contains cardiac glycosides (cardenolides) highly toxic to humans and animals in all its parts. The milky sap is the most dangerous portion. In South Africa and Mozambique, the use of sap as arrow poison by local communities has been documented. Always handle with gloves and wash hands afterward. Keep away from children and pets.
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Plant Health
Caudex rot from winter moisture: the greatest risk for A. multiflorum in cultivation is excess water during the dormancy period (leafless plant). The caudex softens and develops dark spots. Treatment: stop all watering, remove from the pot, cut away affected tissue with a sterile tool, apply sulfur paste to cuts, and let dry in a warm, dry place for at least 10 days before replanting.
Thrips (Frankliniella occidentalis): damages flower petals, causing silvery discoloration and deformations. Especially problematic during flowering. Treat with spinosad or neem oil; apply in the evening to avoid harming pollinators.
Whitefly (Bemisia tabaci): infests young leaves, secreting honeydew that promotes sooty mold growth. Treat with 1–2% potassium soap or systemic insecticide (imidacloprid) applied to the substrate.
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"A. multiflorum is the only species in the genus Adenium that consistently flowers in the austral winter with branches completely bare, a behavior that radically distinguishes it from A. obesum. This winter reproductive phenology is believed to be an adaptation to attract specific pollinators (mainly butterflies of the genus Charaxes) that are more active in the savanna during the dry season."
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Scientific Integrity
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Discussion
Disclaimer
This species record is provided for educational and informational purposes only. Jardín Roca Negra does not guarantee the accuracy or completeness of the data. Content is community-curated and may be subject to revision; it should not replace advice from a qualified botanist. This species may be toxic, invasive, or subject to legal restrictions — verify before handling or cultivating. Jardín Roca Negra accepts no liability for any harm arising from reliance on this information. Images are reproduced under Creative Commons or equivalent free licenses; credits are noted below each image.