Kalanchoe pinnata (Lam.) Pers.
Air Plant / Life Plant / Miracle Leaf
Kalanchoe pinnata (syn. Bryophyllum pinnatum) is an erect perennial succulent native to Madagascar and naturalized throughout the world's tropics and subtropics, where it is known as "air plant," "miracle leaf," or "cathedral bells." It is widely used in African, Brazilian, Indian, and Caribbean traditional medicine, and is the subject of growing pharmacological research for its flavonoids, alkaloids, and triterpenes.
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Overview
| Category | Classification |
|---|---|
| Family | Crassulaceae |
| Genus | Kalanchoe |
| Growth Habit | Erect succulent herb with hollow stems, perennial in warm climates; behaves as biennial in cooler zones. |
| Conservation Status | No threat category; considered an invasive weed in Australia, Polynesia, Florida, and parts of Latin America. |
| pH Target | 5.5 – 7.0 |
| Type | Tropical loam to clay-loam; tolerates moderately acidic and nutrient-poor soils. |
Origin & Habitat
Morphology
Lower leaves are simple and upper leaves are pinnately compound, with 3–5 ovate dark green leaflets with reddish crenate margins; adventitious plantlets sprout from the crenate notches when a leaf is detached—the trait behind names like "miracle leaf."
ecoFistulous (hollow), robust, erect, glaucous-green stems reaching 90–150 cm tall; the base tends to lignify with age.
ecoBell-shaped, pendulous flowers in branched terminal panicles; the corolla is tubular, 3–4 cm long, greenish-yellow at the base graduating to pinkish-coral at the tip, with 4 fused petals. Flowering occurs in winter to spring.
ecoModerately deep, fibrous root system; the plant can root directly from leaf-margin plantlets onto soil without intermediation, contributing to its invasive character.
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Requirements
Soil & Substrate
Type
Tropical loam to clay-loam; tolerates moderately acidic and nutrient-poor soils.
groups Beneficial Associations
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Propagation Strategy
- 1 Plantlets form spontaneously on the margins of mature leaves.
- 2 Collect when 1–2 cm tall and place on slightly acidic moist substrate.
- 3 Maintain at 20–25 °C; rooting in 2–3 weeks.
- 4 Transplant to individual pots when they reach 3–4 cm.
- 1 Remove a healthy whole leaf and place horizontally on substrate.
- 2 The leaf margins will begin producing plantlets in 3–6 weeks.
- 3 Separate plantlets once they have their own roots.
WARNING: toxic to dogs and cats. Widely used in folk medicine (does not imply safety for pets).
Confusing its popular medicinal use with harmlessness for pets — it is toxic to dogs and cats.
Annually in spring; fast growth and strong roots fill the pot quickly.
Balanced fertilizer every 2 weeks in spring–summer. Reduce in autumn–winter.
Uses & Applications
Precautions / Toxicity
MODERATELY TOXIC. Contains bufadienolides (including bryophyllin A) that are cardiotoxic at high doses. In livestock (cattle, goats), massive ingestion (≥20 g/kg body weight) can be fatal. In humans it is considered weakly genotoxic at high doses; medicinal use is not recommended without professional supervision. Toxic to cats and dogs in any significant quantity.
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"K. pinnata contains quercetin-3-O-α-L-rhamnopyranoside and other flavonoids with documented antidiabetic activity in preclinical studies; bryophyllin A isolated from its leaves has shown the most marked inhibition of Epstein-Barr virus early antigen activation (IC50 = 0.4 μM), opening prospects for use as a chemopreventive agent."
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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.