Oriental Arborvitae (Platycladus orientalis)

Oriental Arborvitae

Platycladus orientalis

Its flat, scaly foliage carries a subtle resinous scent, a quiet evergreen sentinel. Coniferous evergreen tree; common name: Chinese Thuja.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates urban pollution and dry, windy conditions
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Watering Water deeply but infrequently; drought-tolerant once established; avoid overwatering
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Temperature Hardy to -20°C; withstands hot, dry summers and cold, frosty winters
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Characteristics

  • Leaf: Scale-like, flattened sprays; bright green to dark green, aromatic when crushed
  • Cone: Small, woody, ovoid cones (1–2 cm long); mature to brown in autumn
  • Stem: Upright, branching stems forming dense, compact foliage mats
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Care Guide

Watering

Water regularly during establishment; reduce frequency once mature

Fertilization

Apply balanced slow-release fertilizer once. Avoid over-fertilization to prevent excessive foliage growth

Eggshell powder topdressing:Crush dried eggshells to fine powder; sprinkle 1–2 tbsp around the tree base; water in to release nutrients gradually
Pruning
  • Trim hedges in spring and early summer to maintain desired shape and density
  • Remove dead, diseased, or crossing branches year-round to improve airflow
  • Thin dense inner foliage to allow light penetration and reduce pest risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats; no reported toxicity

Humans: Non-toxic to humans; no known adverse effects from ingestion or contact

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Garden Uses & Culture

Culture: Symbolizes longevity and resilience in traditional Chinese culture; used in feng shui practices

Usage: Ornamental hedge, specimen tree; wood used for crafts, construction, and traditional medicinal preparations