Silk Cotton Tree (Bombax ceiba)

Silk Cotton Tree

Bombax ceiba

Its crimson blooms burst before leaves, like fiery clouds against bare branches. Deciduous tropical tree; common names: Silk Cotton Tree, Red Cotton Tree.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Requires full sun for optimal flowering; tolerates partial shade but may produce fewer blooms
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Watering Water deeply when the top 15–20 cm of soil dries out; avoid standing water to prevent root rot
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Temperature Thrives in warm tropical climates; cannot tolerate frost or temperatures below 10°C
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Characteristics

  • Leaf: Palmate compound leaves with 5–9 glossy green leaflets; shed entirely before flowering
  • Flower: Large, cup-shaped crimson or pinkish-red blooms with prominent, clustered stamens
  • Stem/Bark: Young trunks covered in conical spines; mature bark becomes smooth grey; seed pods produce fluffy cotton-like fiber
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Care Guide

Watering

Maintain consistently moist soil during active growth and flowering periods

Fertilization

Apply balanced slow-release fertilizer once at the start of growth. Avoid high-nitrogen fertilizers to prioritize flower production over foliage growth

Banana peel compost tea:Soak fully composted banana peels in water for 24 hours; dilute 1:20 for root drenching to avoid nutrient burn
Pruning
  • Remove dead, damaged, or crossing branches in late winter before new growth emerges
  • Thin crowded inner branches to improve airflow and light penetration
  • Trim to maintain desired canopy shape; avoid heavy pruning as it may reduce subsequent flowering
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats

Humans: No known toxic effects for humans

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Garden Uses & Culture

Culture: Symbolizes resilience and seasonal renewal in traditional South Asian and Southeast Asian cultures

Usage: Ornamental landscape tree; cotton-like seed fiber used for stuffing pillows and insulation