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Thuja occidentalis 'Mirjam'PBR (v)
  • RHS Plants for pollinators

white cedar 'Mirjam'

A compact, rounded evergreen conifer with green and golden yellow foliage which turns orange-bronze in autumn and winter.

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
5–10 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Gold Yellow
Summer Green Gold Yellow
Autumn Bronze Green Orange
Winter Bronze Green Orange
Position
  • Full sun
Aspect

East–facing or South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Cupressaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Bushy
Potentially harmful
Harmful if eaten, skin allergen. Wear gloves and other protective equipment when handling
Genus

Thuja are fast-growing evergreen trees of narrowly conical habit, with flat sprays of tiny, aromatic, scale-like leaves and small knobbly cones

Name status

Accepted

How to grow

Cultivation

Grow in moist but well drained soil in full sun

Propagation

Propagate by semi-ripe cuttings in late summer

Suggested planting locations and garden types
  • Cottage and informal garden
  • Patio and container plants
  • Low Maintenance
Pruning

No pruning required

Pests

May be susceptible to scale insects ad aphids

Diseases

May be susceptible to honey fungus and other fungal diseases, particularly thuja blight and Coryneum canker (see conifers: brown patches)

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