White Cedar Hedge
Thuja occidentalis 'Smaragd'
White Cedar 'Smaragd', Thuja occidentalis 'Smaragd', is a narrow, upright conifer with bright emerald-green foliage that keeps its colour through winter.
It grows slowly, around 10–20cm a year, and holds a slim natural shape, so it makes a neat hedge of 1.5–3m that needs little width and only one trim a year. Choose root-balled plants from 100cm to 175cm for a finished hedge straight away, delivered from autumn to spring.
- ✓Narrow, upright shape
- ✓Bright emerald green all year
- ✓One trim a year
- ✓Root balled 100–175cm
Key product facts
White Cedar Hedge Root Types
Choose from our range of White Cedar Hedge sizes and root types below.
Root ball White Cedar hedging
Availability
- In Season
- Pre Order
- Out Of Season
- Jan
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- May
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- Aug
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Choose your height
Pick a height to see the relevant single-plant and bulk-buy options.
100-125cm
- £21.95
£21.95 per plant
125-150cm
- £36.95
£36.95 per plant
150-175cm
- £52.95
£52.95 per plant
Pot grown White Cedar hedging
Availability
- In Season
- Pre Order
- Out Of Season
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Choose your height
Pick a height to see the relevant single-plant and bulk-buy options.
100-125cm
- £26.95
£26.95 per plant
Sold out
125-150cm
- £32.95
£32.95 per plant
Sold out
Choosing your White Cedar plants
Because 'Smaragd' grows slowly, buy it close to the height you want. All sizes are planted at the same density.
| Root type | Size | Plants per metre | When |
|---|---|---|---|
| Root balled | 100–125cm | 3 | Autumn to spring |
| Root balled | 125–150cm | 3 | Autumn to spring |
| Root balled | 150–175cm | 3 | Autumn to spring |
These are single-row figures. Planted at 3 per metre, the narrow plants knit into a continuous hedge within a season or two.
Why plant a White Cedar 'Smaragd' hedge?
A neat hedge for tight spaces
'Smaragd' grows as a slim cone, so a hedge takes up little more than 60–80cm of width. It suits front gardens, driveways and narrow borders where Laurel or Leylandii would quickly take over.
Colour that lasts through winter
Many conifers turn bronze or dull in cold weather, but 'Smaragd' keeps its bright emerald green all year, giving a fresh, formal look.
Low maintenance
Slow growth and a naturally tidy shape mean one light trim a year keeps it neat, far less work than the faster conifers.
White Cedar compared with other evergreen hedges
| White Cedar 'Smaragd' | Western Red Cedar | English Yew | |
|---|---|---|---|
| Growth a year | 10–20cm | 30–60cm | 20–40cm |
| Width needed | Narrow | Wide | Medium |
| Best hedge height | 1.5–3m | 2–4m+ | 1–4m |
| Trimming | Once a year | Twice a year | Once a year |
For a taller, faster screen choose Western Red Cedar; for a formal hedge that grows in shade, compare English Yew hedging.
Choosing the right hedge
Is White Cedar 'Smaragd' right for you?
A great choice if you want:
- ✓A neat, narrow evergreen hedge
- ✓Front gardens and tight spaces
- ✓Bright green colour all winter
- ✓A hedge of 1.5–3m with one trim a year
Consider another hedge if:
- ×You want a fast or very tall screen
- ×The site is deeply shaded or very windy
- ×Your ground stays waterlogged or very dry
Where does White Cedar grow best?
Sun and shelter
'Smaragd' is at its best in full sun or very light shade. In deep shade it grows thin, and in very exposed, windy spots the foliage can scorch.
Soil
It likes moist, well-drained soil, including clay and chalk. Avoid ground that stays waterlogged, and keep it watered in dry spells for the first two summers: drought is the main cause of brown patches in young Thuja.
Planting, growth and trimming
Planting
Plant root-balled White Cedar from autumn to spring while it is dormant. Keep the root ball intact, plant at the same depth it was growing, firm in and water thoroughly.
How fast does it grow?
Around 10–20cm a year once established. It can eventually reach 4–5m if left, but is easily kept at 1.5–3m.
Trimming
A light trim once a year in late summer is usually enough. Do not cut back into bare brown wood, as it is slow to regrow. Our Thuja hedge care guide covers spacing, watering and pruning in more detail.
Buying help
Buying FAQs
What size White Cedar should I buy?+
Because 'Smaragd' is slow growing, buy it close to the finished height you want. Choose 150–175cm plants for a head-height hedge straight away, or 100–125cm plants for a lower hedge or to save on cost.
How many White Cedar plants do I need per metre?+
Plant White Cedar at 3 per metre in a single row for every size we sell. The calculator on this page works out the total from your hedge length.
When is root-balled White Cedar delivered?+
Root-balled plants are lifted while dormant and delivered from autumn to spring, depending on the weather. Plant them as soon as possible after delivery, keep the root ball intact and water them in well.
How tall does a 'Smaragd' hedge grow?+
As a hedge it is usually kept at 1.5–3m. Left untrimmed it can eventually reach 4–5m, but it grows only 10–20cm a year, so it is easy to hold at the height you want.
Is White Cedar the same as Western Red Cedar?+
No. Both are Thuja, but White Cedar 'Smaragd' (Thuja occidentalis) is narrow and slow, while Western Red Cedar (Thuja plicata) is broad and fast, for taller screens.
Why is my new Thuja turning brown?+
The most common cause is dry roots in the first year, especially from spring to late summer. Water thoroughly once or twice a week in dry weather until the hedge is established, and check that the ground is not waterlogged.
Helpful guides
More help with White Cedar
Related hedge plants
Compare these alternative hedge plants to find the right choice for your garden, planting conditions and preferred hedge style.
- Price From £21.95 Shop Now This product has multiple variants. The options may be chosen on the product page
Western Red Cedar is a dense evergreen hedging plant that has aromatic, bright green foliage, perfect for screening.
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English Yew (Taxus baccata) is a dense, native evergreen hedging plant with fine, dark green foliage. It clips beautifully into formal hedges, grows in sun or shade and provides dependable year-round screening. Yew is long-lived, tolerant of hard pruning and ideal where a smart, controlled hedge is preferred over very fast growth.
- Price From £8.95 Shop Now This product has multiple variants. The options may be chosen on the product page
Green Leylandii is a very fast growing evergreen hedging plant, with fragrant green foliage that creates a dense screen.
- Price From £7.95 Shop Now This product has multiple variants. The options may be chosen on the product page
Golden Leylandii is a fast growing evergreen hedging plant, with golden yellow foliage that creates a dense screen.
- Price From £4.50 Shop Now This product has multiple variants. The options may be chosen on the product page
Portuguese Laurel is a dense evergreen hedge with glossy, dark green pointed foliage on red stems that is perfect for reducing road noise and providing privacy.
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Griselinia is a dense evergreen hedging plant with attractive glossy apple green leaves and thrives in coastal positions.
Planting essentials
Give your new hedge the best possible start with the planting products we recommend for establishment and healthy growth.
- Price From £14.95 Shop Now This product has multiple variants. The options may be chosen on the product page
Support the establishment of newly planted hedges, trees and shrubs with Rootgrow mycorrhizal fungi. The beneficial fungi form a secondary root system that helps plants access water and nutrients from the surrounding soil.
The included dipping gel makes Rootgrow particularly convenient for bare-root hedging, while the dry granules can be applied directly to the roots of pot-grown and root-balled plants.
Choose from 360g, 1kg and 2.5L Professional packs for domestic gardens, longer hedge lines and trade or commercial planting projects.
- Price From £8.25 Shop Now This product has multiple variants. The options may be chosen on the product page
Feeding your hedging with our granular ‘Hedge Feed’ the ultimate solution for nurturing and rejuvenating your beloved hedge. Our carefully crafted long lasting granular hedge fertiliser provides the essential nutrients your hedge needs to thrive.
- Price From £0.95 Shop Now This product has multiple variants. The options may be chosen on the product page
As well as supplying high quality plants we also provide a complete Irrigation package to make sure your investment thrives.
- Price From £8.00 Shop Now This product has multiple variants. The options may be chosen on the product page
Our Hedge Planting Compost is a natural, peat free soil conditioner/improver.
- Price From £0.29 Shop Now This product has multiple variants. The options may be chosen on the product page
Our bamboo canes provide support to your hedge and ensures that plants fitted with a rabbit guard will grow nice and straight. They are 90cm long (3ft) and made from 100% bamboo.
- Price From £0.58 Shop Now This product has multiple variants. The options may be chosen on the product page
Our Hedging Spiral Guards help protect your hedge from damage by rabbits.


