• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Cryptomeria japonica

Japanese cedar

Japanese cedar

© � RHS 1999

  • Other common names Japanese cedar

    Japanese red cedar

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  • Genus 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

  • Family Cupressaceae / Cupressaceae

  • Details 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

  • Plant range Japan


  • Foliage Evergreen

  • Habit Bushy



  • Full Sun

  • Partial Shade

  • Aspect South-facing or West-facing or East-facing

  • Exposure Sheltered


  • Chalk


  • Chalk


  • Chalk


  • Chalk


  • MoistureMoist but well-drained

  • SoilSand, Clay, Chalk, Loam

  • pHAcid, Alkaline, Neutral


  • Ultimate height

    Higher than 12 metres

  • Ultimate spread

    4-8 metres

  • Time to ultimate height

    20-50 years

How to grow

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

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

Suggested planting locations and garden types Low Maintenance Architectural Cottage & Informal Garden

How to care

Pruning No pruning required

Pests Generally pest free

Diseases Generally disease free

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