Darwin's Orchid (Angraecum sesquipedale)

Darwin's Orchid

Angraecum sesquipedale

Its 30cm nectar spur inspired Darwin’s evolutionary prediction. Epiphytic orchid; common names: Darwin's Orchid, Star of Bethlehem Orchid.

Partial sun
1–2/week
Moderate
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun to prevent leaf scorch
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Watering Water thoroughly when growing medium is nearly dry; avoid overwatering to prevent root rot
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Temperature Thrives in warm, consistent temperatures; avoid sudden drops below 12°C
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Characteristics

  • Leaf: Thick, leathery, linear-lanceolate leaves arranged in two rows, up to 45 cm long
  • Flower: Waxy, white, star-shaped blooms with a long, slender nectar spur (up to 30 cm)
  • Stem: Short, creeping rhizome with aerial roots for anchorage and moisture uptake
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Care Guide

Watering

Keep growing medium slightly moist; increase humidity with regular misting

Fertilization

Diluted balanced orchid fertilizer every 2 weeks. Cease fertilization during winter dormancy

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water, dilute 1:20 for root drench; avoid raw peels to prevent mold growth
Pruning
  • Remove spent flower spikes at the base after blooming to redirect plant energy
  • Trim dead or yellowing leaves close to the rhizome to maintain plant health
  • Thin overcrowded aerial roots to improve airflow around the growing medium
  • Repot and trim rotting roots every 2–3 years in early spring
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA has no listed toxicity to cats

Humans: No known toxicity to humans

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Garden Uses & Culture

Culture: Symbolizes evolutionary curiosity and the validation of scientific prediction

Usage: Ornamental epiphyte for indoor or greenhouse decorative display