Japanese Cedar (Cryptomeria japonica)

Japanese Cedar

Cryptomeria japonica

Its tiered evergreen foliage carries quiet forest dignity. Large coniferous tree; common names: sugi, Japanese cedar.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerates coastal wind and light shade in hot climates
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Watering Water deeply for young trees; established mature trees are drought-tolerant
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Temperature Hardy to -10°C; tolerates hot summer temperatures with sufficient soil moisture
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Characteristics

  • Leaf: Scale-like, awl-shaped evergreen foliage arranged in spirals, dark green to blue-green
  • Cone: Small globular female cones (1–2 cm diameter) that mature to brown
  • Stem/Bark: Reddish-brown fibrous bark that peels in strips with age
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Care Guide

Watering

Water young trees weekly; established trees need deep watering only during prolonged drought

Fertilization

Apply slow-release granular fertilizer once in early spring. Avoid over-fertilization to prevent excessive foliage growth

Banana peel compost tea:Compost banana peels for 2–3 months, dilute 1:20 with water for root drench; avoid applying undiluted peels to prevent pest attraction
Pruning
  • Remove dead or damaged branches in late winter before new growth emerges
  • Trim ornamental cultivars to maintain desired shape and size in early spring
  • Thin dense inner foliage to improve air circulation and reduce disease risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic; no harmful effects from ingestion or contact

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

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Garden Uses & Culture

Culture: Sacred tree in Japanese temple forests; symbolizes longevity and resilience

Usage: Ornamental landscape tree, high-quality timber for construction and crafts, windbreak