White Ironwood (Hypelate trifoliata)

White Ironwood

Hypelate trifoliata

Its leathery evergreen leaves hold quiet coastal resilience. Small evergreen tree; common name: white ironwood.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; highly tolerant of coastal salt spray and wind
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Watering Water deeply when the top 5 cm of soil is dry; drought-tolerant once established
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Temperature Hardy to 10°C; prefers warm, humid coastal climates; avoid prolonged frost exposure
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Characteristics

  • Leaf: Trifoliate, leathery, glossy dark green; leaflets obovate to elliptic with smooth margins
  • Flower: Small, creamy white, fragrant, clustered in axillary panicles
  • Fruit: Dry, winged samara; brown when fully mature
  • Stem/Bark: Smooth, light gray to tan bark; slender, upright branching
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Care Guide

Watering

Water regularly to establish root system; reduce frequency once mature

Fertilization

Diluted balanced granular feed once monthly. Apply fertilizer to moist soil to prevent root burn

Eggshell powder topdress:Crush dried eggshells into fine powder; sprinkle 1 tbsp per plant base every 3 months; avoid direct contact with tender roots
Pruning
  • Remove dead, damaged, or crossing branches in late winter to maintain canopy health
  • Thin dense growth to improve airflow and light penetration
  • Shape lightly to preserve natural rounded form; avoid heavy pruning
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No listed toxicity to cats

Humans: No documented toxic effects for humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental coastal tree; windbreak for coastal properties; wildlife shelter