Littleleaf Boxwood (Buxus microphylla)

Littleleaf Boxwood

Buxus microphylla

Dense, compact evergreen foliage forms living sculpture. Slow-growing woody shrub; common names: littleleaf boxwood, Japanese boxwood.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Partial to full sun; tolerates light shade, but avoid intense midday summer sun to prevent leaf scorch
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Watering Water deeply when the top 2–3 cm of soil feels dry; avoid overwatering to prevent root rot
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Temperature Hardy to -10°C; protect from extreme cold winds and prolonged temperatures above 32°C
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Characteristics

  • Leaf: Small, oval, glossy dark green leaves; opposite arrangement, leathery texture
  • Flower: Inconspicuous pale yellow-green clusters; faintly fragrant when open
  • Stem: Slender, woody stems with smooth light brown bark
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Care Guide

Watering

Keep soil evenly moist; reduce watering during periods of heavy rainfall

Fertilization

Apply slow-release balanced fertilizer once. Refrain from fertilizing in late autumn to prevent new growth vulnerable to frost damage

Eggshell powder topdressing:Crush dried eggshells into fine powder; sprinkle 1 teaspoon per plant and mix into the top 1 cm of soil to boost calcium levels and improve soil structure
Pruning
  • Trim hedges or shape plants in late spring after flowering to maintain desired form
  • Remove dead, damaged, or overcrowded branches to improve airflow and reduce disease risk
  • Thin dense growth annually to allow light penetration to inner foliage
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains alkaloids that may cause gastrointestinal distress and neurological symptoms

Humans: Contains alkaloids; ingestion of large quantities may cause mild gastrointestinal upset including nausea and vomiting

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Garden Uses & Culture

Culture: Widely used for formal hedges and topiary; symbolizes structure, order, and enduring beauty in garden design

Usage: Ornamental hedge, container topiary, and low border plant