Aloe bulbillifera H.Perrier
Bulbil-bearing aloe
Aloe bulbillifera is a botanical rarity unique in its genus: it produces bulbils (small bulb-like structures) directly in the inflorescence, an exceptional vegetative reproductive strategy in Aloe. Endemic to the central plateau of Madagascar, this medium-sized aloe grows in rocky high-altitude environments with cool nights. Its orange-red flowers are visited by Malagasy sunbirds.
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Overview
| Category | Classification |
|---|---|
| Family | Asphodelaceae |
| Genus | Aloe |
| Growth Habit | Medium rosette on short stem, solitary |
| Conservation Status | Vulnerable |
| pH Target | 5.5–6.5 |
| Type | Sandy lateritic soil with some organic matter, slightly acidic pH |
Origin & Habitat
Morphology
Lanceolate leaves 30–45 cm long, mid-green to grey-green, with brown marginal teeth 2–3 mm.
ecoShort stem 15–30 cm covered with withered leaves in mature plants.
ecoOrange-red tubular flowers 3 cm long in racemes on 50–70 cm peduncles; green bulbils 1–2 cm are produced in the inflorescence between the flowers.
ecoFibrous roots that penetrate the crevices of the lateritic rocks of the Malagasy plateau.
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Requirements
Soil & Substrate
Type
Sandy lateritic soil with some organic matter, slightly acidic pH
groups Beneficial Associations
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Propagation Strategy
- 1 Collect bulbils from the inflorescence when 1–2 cm and showing small roots.
- 2 Plant directly in moist lateritic substrate.
- 3 Maintain at 18–22 °C and moderate humidity.
- 4 They root and shoot in 3–5 weeks.
- 1 Sow in fine sandy substrate at 20–23 °C.
- 2 Cover with film and keep slightly moist.
- 3 Germinates in 4–7 weeks.
- 4 Transplant seedlings at 3–4 cm.
Bulbils are the easiest and most successful propagation method; always use them.
Letting bulbils fall without collecting them, losing them.
Every 2–3 years in spring
Diluted liquid fertilizer (½ dose), once a year in spring
Uses & Applications
Precautions / Toxicity
Toxic if ingested.
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"Bulbil production in the inflorescence is an adaptation to the steep rocky slopes of the Malagasy plateau, where seeds have little chance of germinating; the bulbils fall and root directly in the crevices."
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Scientific Integrity
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Sources
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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.