White Kirkia (Kirkia acuminata)

White Kirkia

Kirkia acuminata

Its peeling bark and fragrant flowers blend rugged beauty with subtle charm. Deciduous tree; common names: White Kirkia, Pepper Tree.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; thrives in hot, dry conditions with ample sunlight
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Watering Water deeply during prolonged dry spells; drought-tolerant once fully established
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Temperature Hardy to light frost; grows best in warm temperate to subtropical climates
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Characteristics

  • Leaf: Compound pinnate leaves, 15–30 cm long, with 6–12 oval glossy green leaflets that turn yellow in autumn
  • Flower: Small, creamy-white, fragrant clustered blooms at branch tips
  • Stem/Bark: Pale grey smooth bark that peels to reveal lighter underbark as the tree matures
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Care Guide

Watering

Water regularly during active growth; allow top 5 cm of soil to dry between waterings

Fertilization

Apply balanced slow-release fertilizer once at the start of growth. Use low-nitrogen fertilizer to promote flowering rather than excessive foliage growth

Eggshell powder top-dress:Crush dried eggshells into fine powder; sprinkle lightly around the base of the tree and water in to release nutrients gradually
Pruning
  • Remove dead, damaged, or crossing branches in late winter before new growth emerges
  • Lightly shape the canopy to maintain a rounded form; avoid heavy pruning that may reduce flowering
  • Trim suckers at the base to direct energy to the main trunk and canopy
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: No documented toxicity to cats per ASPCA

Humans: No documented toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental shade tree; durable wood used for carving and small crafts