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Cryptomeria japonica

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© RHS 1999

Characteristics

Plant type

Conifer or Tree

Habit

Bushy

Resilience

Hardiness

H6 (hardy - very cold winter)

Colour

Flower

Pale Yellow in Spring

Foliage

Dark Green in Autumn, Spring, Summer and Winter

Fruit

Brown in Summer

Stem

Brown and Red in Autumn, Spring, Summer and Winter

Size

Ultimate height

Higher than 12 metres

Ultimate spread

4-8 metres

Time to ultimate height

20-50 years


Preferred common name

Japanese cedar

Family

Cupressaceae


Cryptomeria are large evergreen trees with attractive red-brown bark and dense foliage consisting of short awl-shaped leaves arranged spirally around the branchlets; cones are spherical

C. japonica is a vigorous evergreen conifer making a large tree with conical habit and distinctive, fibrous red-brown bark. Leaves short, awl-shaped, spirally arranged. Cones 2cm, globose, green becoming brown

Other common names

  • Japanese red cedar
  • sugi

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

  • South-facing, West-facing or East-facing
  • Sheltered

Cultivation

Grows in any moist but well-drained soil. Requires sheltered position. It is one of few conifers that will coppice successfully

Soil

  • Moist but well-drained
  • Acid, Alkaline or Neutral
  • Sand, Clay, Chalk or Loam

Propagation

Propagate by seed in spring or semi-hardwood cuttings in late summer

Suggested planting locations and garden types

Architectural, Cottage/Informal Garden or Low Maintenance


How to care

Pruning

No pruning required

Pests

Generally pest free

Diseases

Generally disease free