Coco de Mer (Lodoicea maldivica)

Coco de Mer

Lodoicea maldivica

Its seeds are the largest on Earth, a marvel of tropical evolution. Evergreen palm tree; common names: sea coconut, double coconut.

Full sun
2–3/week
Challenging
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Plant Needs

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Sunlight Requires full sun for mature growth; young palms tolerate partial shade to prevent leaf burn
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Watering Keep soil consistently moist for young trees; mature palms are drought-tolerant once established
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Temperature Thrives in warm tropical temperatures; cannot tolerate frost or temperatures below 18°C
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Characteristics

  • Leaf: Large, fan-shaped fronds up to 10 m long, leathery, blue-green with split margins
  • Flower: Male catkins are long, pendulous, and yellow; female flowers are round, greenish-white
  • Fruit: Largest seed in the plant kingdom, weighing 10–30 kg, with a distinctive double-lobed shape
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Care Guide

Watering

Maintain consistent soil moisture; avoid waterlogging

Fertilization

Apply slow-release palm fertilizer once every 3 months. Avoid over-fertilization to prevent root burn and salt buildup

Banana peel compost tea:Compost banana peels for 4–6 weeks; dilute 1:20 with water for root drench to support frond health
Pruning
  • Remove dead, brown fronds to improve air circulation and appearance
  • Avoid pruning green fronds, as palms rely on them for photosynthesis
  • Trim spent flower stalks after fruiting to redirect energy to new growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No documented toxicity to cats

Humans: No known toxic compounds; mature fruit flesh is edible when properly prepared

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Garden Uses & Culture

Culture: National symbol of Seychelles; has cultural and mythological significance as the "love nut"

Usage: Ornamental landscaping in tropical regions; mature seeds are collected for decorative purposes