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ConifersTreesSynonym

× Cupressocyparis leylandii 'Castlewellan Gold'

Leyland cypress 'Castlewellan'

'Castlewellan' is a vigorous columnar evergreen conifer to 25m or more, with flat sprays of golden-yellow foliage, sometimes tinged bronze

Synonyms
× Cupressocyparis leylandii 'Castlewellan Gold'
× Cupressocyparis 'Castlewellan Gold'
see more× Cupressocyparis leylandii 'Castlewellan'
× Cupressocyparis leylandii 'Galway Gold'
× Cuprocyparis leylandii 'Galway Gold'
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Size
Ultimate height
Higher than 12 metres
Time to ultimate height
10–20 years
Ultimate spread
2.5–4 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Bronze Yellow
Summer Bronze Yellow
Autumn Bronze Yellow
Winter Bronze Yellow
Position
  • Full sun
  • Partial shade
Aspect

South–facing or North–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Cupressaceae
Native to the UK
No
Foliage
Evergreen
Habit
Columnar upright
Potentially harmful
Foliage may cause skin irritation. Wear gloves and other protective equipment when handling
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 with the potential to become a nuisance

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types
  • Architectural
  • Hedging and screens
Pruning

No pruning required, but can be trimmed and shaped 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

Pests

May be affected by conifer aphids and scale insects

Diseases

May be subject to a canker and honey fungus; see Conifers: brown patches

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