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Chamaecyparis lawsoniana 'Chilworth Silver' AGM

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© RHS 2003

Characteristics

Plant type

Conifer or Shrub

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

1.5-2.5 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

10-20 years


Preferred common name

Lawson's cypress 'Chilworth Silver'

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

'Chilworth Silver' is a slow-growing medium-sized evergreen shrub of broadly columnar habit, with dense, soft sprays of bright silvery-blue, semi-juvenile foliage

Synonym(s)

  • Chamaecyparis lawsoniana 'Nyewoods'

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. Slow growing

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, City/Courtyard Gardens, Flower borders and beds, Hedging/Screens, Low Maintenance or Rock Garden


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