Alocasia lauterbachiana – Care Guide and Growth Insights
Alocasia lauterbachiana, known as “Purple Sword,” is a premium tropical aroid from Papua New Guinea. Its tall, narrow leaves with serrated edges display glossy green surfaces and deep violet undersides, creating a dramatic contrast in indoor collections. Supported by mottled chocolate-brown stems, this rare collector species can reach 1.5 m indoors, combining sculptural height with refined color. Learn more about the genus in our Alocasia guide.
● Why Alocasia lauterbachiana Stands Out
- Distinctive form: Long, blade-like leaves with gently serrated edges.
- Color contrast: Glossy dark green above and rich violet-purple below.
- Impressive stature: Reaches up to 1–1.5 m indoors with a strong, upright habit.
- Textured stems: Chocolate-mottled petioles add architectural interest.
- Collector appeal: Rare in cultivation, highly valued among aroid enthusiasts.
● Natural Habitat and Growth Conditions
Native to the rainforests of northern New Guinea and the Bismarck Archipelago, Alocasia lauterbachiana grows near forest margins and rivers in high humidity and warmth (18–31 °C). It prefers bright, filtered light and free-draining, organic soil. This species is toxic if ingested, so keep it away from pets and children.
● How to Care for Alocasia lauterbachiana Indoors
- Light: Provide bright, indirect light; avoid harsh direct sun that can scorch leaves.
- Watering: Keep the mix lightly moist, allowing the top layer to dry slightly between waterings (watering guide).
- Humidity: Prefers stable humidity around 60–70% for vivid color retention (humidity guide).
- Substrate: Use a breathable aroid mix of bark, perlite, and compost for drainage and oxygenation.
- Fertiliser: Apply diluted, balanced liquid fertiliser monthly during active growth.
- Temperature: Maintain 18–28 °C and protect from cold drafts.
- Propagation: Divide rhizomes when repotting; each section should include a growth node.
● Troubleshooting Common Problems
- Drooping leaves: Often caused by irregular watering or low humidity — adjust gradually.
- Browning edges: Result of dry air or mineral salts; flush soil and raise humidity.
- Pests: Watch for spider mites or thrips; wipe leaves and maintain airflow.
- Root rot: Prevent with drainage holes and a chunky, well-aerated substrate.
● Collector Insights and Quick Facts
Alocasia lauterbachiana was originally described as Schizocasia lauterbachiana in 1898 and reclassified by Alistair Hay in 1990. The name honors German botanist Dr. Karl Lauterbach, known for his plant explorations in New Guinea. This rare pentaploid species occasionally flowers indoors, producing a purple-tinged spathe and orange-red berries when pollinated.
● FAQs — Alocasia lauterbachiana
- Why is it called “Purple Sword”? The name refers to its long, narrow shape and purple undersides.
- Is Alocasia lauterbachiana beginner-friendly? Yes — easier than many Alocasias when humidity and light are stable.
- Does it grow quickly indoors? Moderate growth; expect steady new leaves under consistent warmth.
● Bring Home Alocasia lauterbachiana
Bring home Alocasia lauterbachiana — a premium tropical aroid from Papua New Guinea with tall, sword-shaped leaves, purple undersides, and bold form that transforms indoor spaces into lush architectural displays.
Alocasia lauterbachiana
Alocasia lauterbachiana is approximately 75 cm tall and comes in a ⌀ 19 cm pot
