Thuja occidentalis 'Smaragd'
white cedar 'Smaragd'
A slow-growing, evergreen conifer with a conical habit and sprays of bright green, needle-like foliage. Makes an effective screen or shelter-belt or can be used as a stand-alone speciment
Size
Ultimate height
1.5–2.5 metresTime to ultimate height
10–20 yearsUltimate spread
1.5–2.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green | |||
| Winter | Green |
Position
- Full sun
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical 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. Protect from drying winds especially when young
Propagation
Propagate by semi-hardwood cuttings
Suggested planting locations and garden types
- Cottage and informal garden
- Architectural
- City and courtyard gardens
- Patio and container plants
- Rock garden
- Low Maintenance
- Flower borders and beds
- Hedging and screens
Pruning
No pruning required
Pests
May be susceptible to scale insects and conifer aphid
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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