Thuja plicata
Western red cedar, Western arbor vitae
- Height × spread
- 25m × 6m
- Position
- Full sun
- Hardiness
- Colder than -20C (RHS H7)
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
This handsome conifer forms a regular cone shape with rich green foliage that extends to the ground if the tree is grown in an open situation. In forest conditions, it forms a long, slender trunk. The very fine, grey-green leaves have a rather flattened appearance so that they resemble scales. It makes a good informal hedge if properly tended and will grow about 60cm (2ft) a year. The wood from this tree, called red cedar in the timber trade, was used to provide railway sleepers in the United States. Thuja plicata will break from old wood, an advantage if the foliage becomes scorched by winds and cold, as it will regenerate itself. This does not occur with Chamaecyparis lawsoniana.
- Foliage colour
- Green
- Stem colour
- Brown, Red
- Variegated
- No
- Scent
- Yes
- Shape
- Cone
- Height
- 25m
- Spread
- 6m
- Height in 10 years
- 2.5m
- Spread in 10 years
- 1m
- Evergreen
- Evergreen
- Garden style
- Seaside garden, Scented garden, Cottage garden
- Sun or shade
- Likes full sun
- Soil type
- Chalk, Clay, Loam (normal)
- Soil pH
- All types
- Drainage
- Moisture retentive soil, Well drained soil
- Hardiness
- Colder than -20C (RHS H7)
- Borders & containers
- Borders
- Use for
- Hedge, Structural, Architectural, Deer resistant, Bird attraction
- Maintenance
- Easycare – low/no maintenance
- Hazards
- Yes, potentially harmful; Humans: Harmful if eaten; skin allergen
Spring
Spring - late · Outdoors
Feed young plants with slow release fertiliser
Spread a slow release fertiliser around the base of the plant to the edge of the foliage spread, so that it can feed the roots. It is helpful for this to be applied for several years.
This is a simple way to provide a nutrient boost until the plant becomes well established.
Spring-Autumn · Outdoors
Water to keep the soil moist
For best results, this plant needs soil that is always moist. Water deeply and regularly as soon as soil appears dry. Even for established plants in the ground, a dry week can cause problems with some soils. Check plants in pots more often, especially in hot weather. Or install an automatic irrigation system which will do the hard work for you, even when you are away on holiday.
Without regular watering some plants never fully regain their beauty.
Planting & general
Outdoor planting · Planting
Add root growth stimulant to the planting hole
Mycorrhizal fungi helps roots establish quickly, so they absorb water and nutrients more efficiently. It comes as a powder, granule or gel. Add to the planting hole or container, and to the plant's rootball before planting in the hole. For "bareroot" plants use a gel.
Planting
Protect & support young trees
Attach a newly planted tree or tall shrub over 1m to a tree stake to give support and prevent windrock. Use a tree guard to stop tree bark being eaten by animals, especially in areas with deer - removing bark injures a tree and in worst case can kill it.
Found in
More Thuja
Thuja occidentalis 'Smaragd'
American arbor vitae, White cedar, Yellow cedar
Thuja plicata 'Whipcord'
Western red cedar, Western arbor vitae
Thuja
Red cedar, Arborvitae
Thuja occidentalis
American arbor vitae, White cedar, Yellow cedar
Thuja occidentalis
American arbor vitae, White cedar, Yellow cedar
Thuja occidentalis 'Amber Glow'
American arbor vitae, White cedar, Yellow cedar
Thuja occidentalis 'Anniek'
Dwarf white cedar
Thuja occidentalis 'Brobecks Tower'
White cedar