× Cuprocyparis leylandii 'Silver Dust' (v)

RHS Plant Profile
Leyland cypress 'Silver Dust'

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Leyland cypress 'Silver Dust' RHS

Synonyms

× Cupressocyparis leylandii 'Silver Dust'

Conifers Trees

A broadly conical or flame-shaped evergreen tree with dark grey-green foliage splashed with creamy-white shoots

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

Higher than 12 metres

Max Spread

2.5-4 metres

Size

Time to Maturity
10–20 years
Max Spread
2.5-4 metres
Max Height
Higher than 12 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–facing or South–facing or North–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Cupressaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Columnar upright
Potentially harmful
Skin allergen. Wear gloves and other protective equipment when handling Pets (dogs): Skin allergen - for further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
× Cuprocyparis are large, very fast-growing evergreen trees of narrowly conical or columnar habit, with tiny scale-like leaves in dense sprays, and small spherical cones
Name Status
Accepted

How to Grow

Cultivation

Grow in well-drained soil in full sun or part shade. Suitable for hedging but requires regular trimming. Fast growing and it has the potential to become a nuisance

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

  • Coastal
  • Cottage and informal garden
  • Hedging and screens
  • Flower borders and beds

Pruning

Trim and shape as required, as long as cuts are confined to young green shoots. Old wood will not resprout. Trim hedges two or three times in the growing season. See Leyland cypress: pruning for further advice

Pests

May be susceptible to conifer aphid and scale insects

Diseases

May be susceptible to a bacterial canker or honey fungus; see Conifers: brown patches