Cryptomeria japonica (Japanese cedar)

Cryptomeria japonica

Japanese cedar

  • Botanical name: Cryptomeria japonica
  • Common name: Japanese cedar
  • Family: Cupressaceae
  • Plant Type: Tree, Evergreen
Flower colour:

Yellow

Foliage colour:

Green

Cryptomeria japonica evergreen conifer forming a cone of bright green foliage, which emerges yellow in spring and takes on attractive blue tones in winter. Spherical cones are borne in autumn. It’s a good alternative to box and makes a fine topiary plant but is equally attractive if left to its own devices.

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Grow Cryptomeria japonica in a sheltered site in moist but well-drained soil in full sun to partial shade. Propagate by taking semi-hardwood cuttings in late-summer. Pruning is rarely required. Young plants may need protection in winter.

How to grow Cryptomeria japonica

  • Plant size

    12m height

    8m spread

  • Aspect

    South facing, west facing

  • Position in border

    Back

  • Sun exposure: Dappled shade, full sun, partial shade
  • Hardiness: Hardy
  • Soil type: Acidic / chalky / alkaline / clay / heavy / moist / well drained / light / sandy

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Plant
Plant

Do Plant in January

Do Plant in February

Do not Plant in March

Do not Plant in April

Do not Plant in May

Do not Plant in June

Do not Plant in July

Do not Plant in August

Do not Plant in September

Do Plant in October

Do Plant in November

Do Plant in December

Take cuttings
Take cuttings

Do not Take cuttings in January

Do not Take cuttings in February

Do not Take cuttings in March

Do not Take cuttings in April

Do not Take cuttings in May

Do not Take cuttings in June

Do not Take cuttings in July

Do Take cuttings in August

Do not Take cuttings in September

Do not Take cuttings in October

Do not Take cuttings in November

Do not Take cuttings in December

Cryptomeria japonica and wildlife

Cryptomeria japonica has no particular known value to wildlife in the UK.

Is Cryptomeria japonica poisonous?

Cryptomeria japonica has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People