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Chamaecyparis lawsoniana 'Pembury Blue' AGM

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© RHS 1999

Characteristics

Plant type

Conifer or Tree

Habit

Columnar/Upright

Toxicity

Foliage may cause skin irritation

Resilience

Hardiness

H6 (hardy - very cold winter)

Colour

Foliage

Blue and Grey/Silver 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

Lawson's cypress 'Pembury Blue'

Family

Cupressaceae


Chamaecyparis are evergreen trees, usually of narrowly ovoid or columnar outline, with much-branched sprays of small scale-like leaves, and small, globose cones; tiny red male cones are conspicuous in a few cultivars

'Pembury Blue' is an evergreen conifer making a medium-sized tree of broadly conical outline, with pendulous sprays of bright silvery-blue foliage, especially when young

Other common names

  • Lawson cypress 'Pembury Blue'

How to grow

Sunlight

  • Full sun

Aspect

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

Cultivation

Grows well in moist but well-drained soil. Tolerant of chalk soils but prefers slightly acidic soil. Keeps good colour

Soil

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

Propagation

Propagate by grafting and semi-hardwood cuttings

Suggested planting locations and garden types

Architectural, Hedging/Screens or Low Maintenance


How to care

Pruning

No pruning required, but shaped subjects, including hedges, will need trimming twice a year.

Pests

Aphids can cause severe die-back, also gets juniper scale and shoot-boring moths

Diseases

May be affected by honey fungus and Phytophthora root diseases