Planting a bare-root hedge
Bare-root hedging costs a fraction of pot-grown stock and establishes just as well when planted correctly. This guide covers which species work, when to plant in Kent, and what a new hedge needs in its first two growing seasons.
The case for planting dormant
Bare-root is the nursery trade term for a plant lifted from the field and dispatched with no compost, no container and no rootball. The roots are exposed, loosely wrapped in damp material for transit, and planted directly into prepared ground.
This works only while the plant is dormant. A dormant plant is not metabolising, not drawing water through its leaves and not attempting to grow. That physiological pause allows the shock of lifting, transit and replanting to be absorbed by a plant doing almost nothing rather than one in full growth. Survival rates, when planting is done properly, match pot-grown equivalents. A bare-root beech or hornbeam at the 60-90 centimetre nursery size typically costs one-quarter of the equivalent pot-grown plant.
The planting window runs from November through to late March. In Kent, that window is narrower in practice than national guidance suggests. The county's growing season starts two to three weeks earlier than the midlands or the north, so a bare-root plant going in during a mild March week can find itself in a warming, drying soil before its roots have had any time to spread. November is the safest month: five months of cool wet weather lie ahead before the first summer stress. December and January are usually workable. February and early March carry increasing risk as spring accelerates.
Two ground conditions rule out planting. The first is hard frost: frozen ground cannot be worked and the plant cannot make contact with soil particles. The second is waterlogging: roots in anaerobic conditions rot within days, and clay sites across the Weald are the most vulnerable. If a test hole holds standing water for more than a few hours, wait for the soil to drain. Chalk soils drain freely but make first-summer dryness the main threat to establishment.
Species that suit bare-root planting
Not all hedge species tolerate bare-root handling. The entries below cover those that do and note which must be bought as pot-grown or root-balled stock. If you are not certain what species you are planting or extending, work through the identification guide first.
Hawthorn (Crataegus monogyna)
The most widely planted hedgerow species in Britain and the most forgiving of bare-root handling. Hawthorn is native throughout Kent, tolerates almost any aspect and most soil types, and grows rapidly in the first two seasons. A double staggered row at 5 plants per metre produces a dense, stockproof, wildlife-friendly boundary. A single row at 3 plants per metre suits a narrower formal line. Cut back by half at planting to encourage basal branching.
Blackthorn (Prunus spinosa)
Native, thornier than hawthorn and marginally slower to get going in the first season, but equally tolerant of bare-root planting. Blackthorn is the right choice for exposed coastal positions at Thanet, Deal, Whitstable and Folkestone: dense branching and a tough constitution withstand salt wind better than most alternatives. It suckers freely, which builds a stockproof thicket quickly but needs watching on a narrow garden boundary. Plant at 3-5 per metre and cut back by half.
Beech (Fagus sylvatica)
Beech is at its most successful on the free-draining chalk of the North Downs between Sevenoaks and Folkestone and along the ridge through Wye and Elham; it struggles on heavy wet clay. Buy at the 60-90 centimetre nursery size, where bare-root establishment rates are highest. The principal attraction as a formal hedge is winter leaf retention: cut annually, beech holds its copper-brown dead leaves until spring.
Hornbeam (Carpinus betulus)
Clipped hornbeam is nearly indistinguishable from beech and holds dead leaves through winter in the same way. It is the better choice on the heavier Weald clays and damper low-lying sites east of Maidstone, where beech would stress in a wet year. Same bare-root sizes, same spacing. A mixed beech-hornbeam run on a borderline soil is worth considering: the two are fully compatible.
Field maple (Acer campestre)
A native woodland-edge species common on both the chalk and the clay of Kent. Field maple is a backbone of traditional mixed native hedges across the county, tolerates bare-root planting readily, and provides good autumn colour. It does not hold a tight architectural line. Cut back by one third to one half at planting.
Hazel (Corylus avellana)
Very tolerant of bare-root planting even at larger sizes. Hazel grows vigorously but never holds a tight formal line, so it belongs in native and informal hedges. It responds well to coppicing, which renovates an old section and pushes the dense multi-stemmed growth that makes a good hedge base.
Privet (Ligustrum ovalifolium)
Bare-root privet is available and cost-effective. It establishes quickly and tolerates a degree of drying in transit that would harm beech or hawthorn. In Kent, privet grows continuously from May to September and needs two to three cuts a year to hold a clean line. Cut back by half at planting to encourage the bushy base that a privet hedge depends on.
Species that must be bought pot-grown or root-balled
Yew (Taxus baccata), box (Buxus sempervirens), cherry laurel (Prunus laurocerasus), Portuguese laurel (Prunus lusitanica), leylandii, Lawson cypress and western red cedar should all be bought as pot-grown or root-balled plants. Their root systems do not tolerate bare exposure reliably, and the commercial nursery trade does not supply them this way. Planting any of these outside the pot-grown season on a bare-root basis is a false economy.
Planting, step by step
Most bare-root failures trace back to one of four mistakes: planting too late in the season, letting the roots dry out between delivery and planting, leaving air pockets under the root system, or skipping the mulch. This sequence addresses all four.
Receive and protect the plants
Plant within a day or two of delivery. If the ground is frozen or waterlogged on arrival, heel the plants in: dig a shallow trench somewhere sheltered, lay the plants at an angle with their roots in the trench, cover the roots with soil and water. Heeled-in stock can wait safely for two to three weeks. Never leave bare roots exposed to drying air or frost, even briefly.
Prepare the soil
Clear a 600-900 millimetre wide strip along the hedge line, removing all perennial weeds including the roots. Dock, bindweed and couch grass will compete with a newly planted hedge for water through its first summer and can cause failure if they are not removed before planting. On heavy clay, incorporate coarse grit across the planting zone rather than in individual pockets, which creates a drainage sump. On chalk, incorporate well-rotted organic matter to improve moisture retention.
Mark the line and space the plants
Use a string line and canes to mark the hedge position before digging. For a single-row formal hedge, one line is enough. For a native hedge in a double staggered row, mark two parallel lines 30-45 centimetres apart. Native mixed hedges (hawthorn, blackthorn, field maple, hazel) go in at 5 plants per metre across both rows, plants 40 centimetres apart within each row. Formal single-species hedges (beech, hornbeam, privet) go in at 3 plants per metre in a single row, 33 centimetres apart.
Plant to the nursery mark
Dig each hole or section of trench wide enough for the roots to spread without curling. Every bare-root plant has a faint soil discolouration on the lower stem from its nursery depth. Plant to that mark. Too shallow and the root flare dries out; too deep and the base of the stem is buried, inviting rot in wet soils. Work soil back around the roots in layers, firming each layer with the heel to close air pockets. Do not compact the soil into a surface plate that will shed water.
Initial pruning
Prune immediately after planting, not in the following spring. Hawthorn, blackthorn and field maple should be cut back by one third to one half. This hard initial cut triggers vigorous basal growth in the following season and produces a bushier, gap-free hedge faster than leaving the plant at nursery height. Beech and hornbeam are cut back by no more than one third. Privet by one half. Hazel is left at planted height and pruned selectively in the following winter once the framework is visible.
Mulch
Apply 75-100 millimetres of well-rotted bark chip across the entire planting strip, at least 600 millimetres wide. Keep the mulch clear of the stems. It suppresses weeds competing with the roots, retains soil moisture through the first summer and moderates soil temperature. It is the single most effective intervention available to a newly planted hedge and the step most often omitted. Top up to 50 millimetres in year two if the layer has thinned.
Nesting birds and the law
Planting in February or March requires site preparation: clearing existing vegetation, digging and working ground adjacent to other hedges and garden boundaries. Under section 1 of the Wildlife and Countryside Act 1981 it is an offence to intentionally take, damage or destroy the nest of any wild bird while that nest is in use or being built. There is no exemption for garden maintenance.
The main UK nesting season runs from roughly 1 March to 31 August. Those dates are guidance, not law. What the law asks is whether the nest is in use, not the date on the calendar.
Check any existing hedge, shrub or ground cover in the area before beginning site clearance. If a nest is in use, defer that section until the birds have fledged. The same applies to initial pruning of newly planted material: a blackbird will nest in almost anything that offers cover.
Our full position on nesting checks is set out in the Kent Hedge Standard.
The first two growing seasons
Whether a bare-root hedge survives is decided largely in the eighteen months after planting. A hedge ignored through its first summer can fail from drought or weed competition even when planted correctly.
- Water in year one. Apply a deep soak during any dry spell of more than two weeks. A November planting has five months of winter rainfall ahead of it before the first dry period, which is normally sufficient in a Kent year. A March planting has almost none. Do not wait for visible wilting: by the time a newly planted hedge shows distress the roots are already severely stressed.
- Water in year two. Continue to water during extended dry spells in the second summer. By the end of year two most species have extended their roots far enough to manage normal Kent dry spells unaided, but an unusually dry June or July can still damage a hedge not yet fully established.
- Protect from rabbits and deer. Young beech, hornbeam, hawthorn and field maple are browsed readily. On rural and semi-rural sites, spiral tree guards on individual plants or a temporary rabbit net along the hedge line should be fitted at planting, not after damage has occurred.
- Keep the planting strip weed-free. Grass and weeds colonising the mulch strip compete directly with the establishing root system. Hand-weed or carefully hoe the strip in late April and again in late June each year, topping up the mulch as you go.
- The first trim. A light tip trim in summer of year one, removing no more than 5-10 centimetres of new growth, encourages lateral branching without checking the plant. This is not shaping. The full trimming regime described in the cutting calendar starts in year three for most species, once the framework is established.
- Check for gaps. In autumn of year one, walk the hedge line and note any plants that have failed. A 90-95% establishment rate is normal; a run with significant gaps needs infilling in the following bare-root season. Order replacements in September for November delivery.
Planting questions we are asked
When is the best time to plant a bare-root hedge?
November is the best single month for bare-root hedge planting in the UK. The plants are fully dormant, the ground is moist and workable, and there are five months of cool wet weather ahead before the first summer stress.
In Kent, the window runs from November to late March but closes earlier in practice than national guidance suggests, because spring arrives two to three weeks earlier here. Plant as early in the window as ground conditions allow.
What is the difference between bare-root and pot-grown hedging?
Bare-root plants are lifted from the nursery field and dispatched with no compost or rootball, and are sold only while dormant, from November to March. Pot-grown plants can be planted at any time of year but cost significantly more. For species that tolerate bare-root handling, including beech, hornbeam, hawthorn and blackthorn, correctly planted bare-root stock performs at least as well as pot-grown equivalents at one-quarter to one-third of the cost per plant.
How many plants per metre for a beech hedge?
Three plants per metre in a single row, spaced 33 centimetres apart, is the standard for a formal beech or hornbeam hedge. At that density the plants meet at the top within two to three growing seasons and fill the base within five years. Five per metre gives faster canopy closure but increases competition during the critical first two years. For most Kent soils, three per metre is the right balance between speed and long-term density.
Do bare-root hedges need watering after planting?
Yes, through the first two summers. Apply a deep soak during any dry spell of more than two weeks in year one. A November planting has five months of winter rainfall behind it before the first dry period; a March planting has almost none. A mulch layer of 75 to 100 millimetres across the planting strip significantly reduces the watering frequency by retaining soil moisture.
Should bare-root hedging be pruned after planting?
Yes, for most species, and at planting rather than in the following spring. Hawthorn, blackthorn and field maple are cut back by one third to one half immediately. This triggers vigorous basal growth in the following season and produces a denser hedge than leaving the plant at nursery height. Beech and hornbeam are cut back by no more than one third. Privet by one half. Hazel is left at planted height and pruned selectively the following winter.
Maintenance once the hedge is established
From year three, a newly planted hedge needs a maintenance regime built around its species and aspect. We can assess the hedge, agree the right cut frequency and put it on a scheduled plan.