HerbLensGo Plus
← Plant library
Plant photo

Photo: Philipp Franz von Siebold and Joseph Gerhard Zuccarini, Public domain (via Wikimedia Commons)

Japanese Cedar

Cryptomeria japonica

Also known as Sugi, Japanese Red-Cedar, Temple Cedar

At a glance
Family
Cupressaceae (cypress family)
Type
Evergreen conifer tree
Parts used
Wood, bark, and aromatic needles (rarely taken internally)
Size
A giant in its native range, often 130 to 230 feet tall with a straight, towering trunk; garden cultivars are bred much smaller, some staying under 10 feet
Bloom
Small, inconspicuous cones; clouds of yellow pollen are released from the male cones in late winter into spring
Habitat
Cool, moist mountain valleys and forested slopes of Japan and parts of China
Acquisition
Grow or buy
This plant in HerbSense

Key benefits

Richly fragrant, rot-resistant wood
Long-lived architectural presence
Natural moth and insect deterrent
Handsome year-round evergreen screen

Traditional uses

For well over a thousand years, sugi has stood at the heart of Japanese life, its towering, arrow-straight trunks felled to raise temples, shrine gates, and the great wooden halls of old capitals like Nara and Kyoto. Entire sacred groves of ancient Cryptomeria were, and still are, planted around Shinto shrines, where the oldest individuals are treated as living deities in their own right. The fragrant wood was long favored for sake casks and soy sauce barrels, its resin lending a faint cedary sweetness to the liquid aged inside, while shavings and bark were burned as incense to scent temples and homes. It has never been a common ingested medicine, but its aromatic wood and foliage have a long folk history of being burned, worn, or kept close for their scent and presumed purifying qualities rather than eaten or brewed.

How to grow & use it

🔒

The full apothecary for Japanese Cedar

Traditional remedies and step-by-step preparations, a complete growing guide, and how to harvest, dry, and store it, all unlocked with HerbLens Unlimited.

  • Remedies & preparations
  • Growing guide
  • Harvest & storage
Unlock every plant

From under $6 a month. Free plant identifications always included.

Pairs well with
  • Hinoki cypress
  • Sandalwood
  • Sacred Japanese incense herbs like mugwort
Substitutes
  • Western red cedar (for aromatic wood use)
  • Hinoki cypress
Choose it when

For the gardener dreaming of a living temple gate, a single tree that will still be towering when their grandchildren are old.

Did you know?

The Jomon Sugi, a wild Cryptomeria japonica growing on the island of Yakushima, is estimated by some researchers to be between two and seven thousand years old, making it one of the most ancient living trees in Japan and a pilgrimage site for hikers who trek for hours through mossy forest just to stand beneath it.

Safety

Japanese cedar pollen is one of Japan's most significant seasonal allergens, causing widespread allergic rhinitis (kafunsho) each spring, and its sawdust can irritate airways too. The essential oil is for external, diffused use only and should never be taken by mouth.