Sea Poison Tree (Barringtonia asiatica)

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Sunlight Full sun to partial shade; tolerates coastal salt spray and strong tropical sunlight

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Watering Water deeply to maintain moist soil; tolerates short drought periods once established

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Temperature Thrives in warm tropical temperatures; cannot tolerate frost or temperatures below 15°C

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Leaf: Large obovate leathery leaves clustered at branch tips; glossy dark green upper surface
Flower: Pendulous white waxy racemes with long stamens; fragrant at night
Fruit: Pear-shaped green drupe with fibrous buoyant husk for ocean dispersal

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Watering

Keep soil consistently moist; increase frequency during dry spells

Fertilization

Diluted balanced fertilizer once monthly. Use slow-release granular fertilizer for sustained nutrient delivery in growing season

Banana peel compost tea：Compost banana peels fully, dilute 1:20 for root drench; avoid applying to dry soil to prevent root burn

Pruning

Remove dead or damaged branches to maintain canopy shape and reduce disease risk
Trim overcrowded branches to improve airflow and light penetration
Prune after flowering to encourage new growth; avoid heavy pruning in winter

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion may cause vomiting, diarrhea, lethargy

Humans: Seeds contain toxic saponins; ingestion causes gastrointestinal distress

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Culture: Used in Pacific Island cultures for traditional external medicine and wood carving

Usage: Ornamental coastal shade tree; wood used for small crafts and tool handles