White Leadtree (Leucaena leucocephala)

White Leadtree

Leucaena leucocephala

Fast-growing nitrogen-fixer, a hardy tropical shrub/tree with fluffy white blooms; common names: White Leadtree, Jumbay

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Requires full sun exposure for optimal flowering and growth; tolerates partial shade but may produce fewer blooms
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Watering Water deeply when the top 5 cm of soil is dry; drought-tolerant once established, avoid overwatering to prevent root rot
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Temperature Thrives in warm tropical and subtropical temperatures; sensitive to frost, with damage occurring below 10°C
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Characteristics

  • Leaf: Bipinnate compound leaves with small oval leaflets; bright green, fern-like appearance
  • Flower: Round, fluffy white globular inflorescences with a faint sweet fragrance
  • Stem/Bark: Smooth light brown bark; young green stems have fine, soft hairs
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Care Guide

Watering

Water regularly to support active new growth; ensure soil drains well to prevent waterlogging

Fertilization

Diluted balanced liquid feed once every 2 months. Avoid over-fertilization, as the plant fixes its own atmospheric nitrogen

Banana peel compost tea:Compost banana peels for 2–3 weeks to break down nutrients, steep in water for 24 hours, dilute 1:20 with water for root drenching; avoid using raw peels to prevent pest infestations and odor
Pruning
  • Prune overgrown branches in late winter to maintain a compact shape and encourage new growth
  • Remove dead, diseased, or damaged stems to improve airflow and reduce disease risk
  • Thin dense foliage to allow light penetration and promote uniform flowering
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA notes potential mild toxicity; ingestion may cause vomiting, diarrhea, and reduced appetite

Humans: Contains mimosine, which may cause mild gastrointestinal upset with acute ingestion; chronic high intake can lead to hair loss and thyroid dysfunction

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Garden Uses & Culture

Culture: N/A

Usage: Nitrogen-fixing agroforestry species to improve soil fertility; ornamental landscape plant; processed forage for livestock (to remove toxic mimosine)