Balsa Tree (Ochroma pyramidale)

Balsa Tree

Ochroma pyramidale

Lightweight wood makes it a botanical engineering marvel. Fast-growing deciduous tree; common name: balsa wood tree.

Full sun
2–3/week
Moderate
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Plant Needs

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Sunlight Requires full direct sunlight for optimal growth; tolerates partial shade during intense midday heat
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Watering Keep soil consistently moist in active growing season; reduce watering during dry dormancy to prevent root rot
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Temperature Thrives in warm tropical temperatures; cannot tolerate frost or temperatures below 10°C
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Characteristics

  • Leaf: Large, heart-shaped, fuzzy green leaves up to 30 cm wide; drop in dry season
  • Flower: Cup-shaped, yellow to orange blooms with pink/purple centers; nocturnal fragrance
  • Stem/Bark: Smooth, pale brown bark; soft, lightweight wood with extremely low density
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Care Guide

Watering

Maintain evenly moist soil; avoid waterlogging by ensuring proper drainage

Fertilization

Apply balanced diluted fertilizer every 4 weeks. Use organic fertilizers to support soil health without burning delicate roots

Banana peel compost tea:Compost banana peels for 2–3 weeks to break down nutrients; steep in water for 24 hours, dilute 1:20 for root drench to support flowering and wood development
Pruning
  • Remove dead or damaged branches in early spring to improve airflow
  • Thin crowded lower growth to encourage vertical trunk development
  • Trim overgrown branches to maintain desired shape; avoid heavy pruning during dry dormancy
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: N/A

Usage: Lightweight wood for model making, crafts, and low-load construction; ornamental shade tree in tropical gardens