← All guides · Species & planting · Published August 2026 · Richard Lim

Three ways to plant a new hedge on the CT14 coast, and when each one earns its price.

Bare-root, pot-grown or semi-mature: the difference is not just cost. It is the planting window and how long you wait for a screen. In coastal Deal and Walmer the salt wind and the shingle-over-alluvium ground add two more variables most generic planting guides skip.

When someone calls me about a new hedge in Deal, Walmer or Kingsdown, there are usually three starting points. They have inherited a bare boundary and want privacy. They are replacing a hedge that was grubbed out or lost. Or they need a faster screen than bare-root will deliver in a reasonable time. Each scenario points to a different planting method, and the method determines the season, the budget and the aftercare regime.

There is no single right answer. Bare-root is the cheapest and is what I default to for privet, hawthorn, blackthorn and hornbeam planted between October and March. Pot-grown earns its higher cost when the job is a summer plant-out or when the species does not travel well as bare-root (griselinia, escallonia, pittosporum). Semi-mature container plants make sense on seafront plots where the owner genuinely needs a 1.5-metre screen within eighteen months rather than five years, even though the cost is ten times the bare-root route.

The table below puts all three methods side by side. The sections that follow expand on what each row means in practice for a CT14 coastal garden.

Bare-root: the Deal contractor's default from October.

Bare-root whips are lifted from open-ground nursery beds once they go dormant in autumn, bundled without soil, and replanted before they break bud in spring. The window is roughly October to March, closing sharply once growth restarts in April. Outside that window bare-root plants simply do not exist as a product: nurseries do not lift them and retailers do not stock them.

For inland and sheltered Walmer gardens, bare-root privet at 40–60 cm is my first choice for a new hedge on a budget. A double-staggered row at 30–45 cm plant spacing gives a dense base and fills in within four or five years. Privet establishes fast on Deal's coastal alluvium soils, tolerates the free-draining ground well, and is tough enough to handle the salt if it has a sheltered first season. Hawthorn and blackthorn are the choice for exposed field margins and the Kingsdown cliff edge: the thorns are a practical bonus for stock-proofing and wildlife value, and both species push on faster than griselinia or escallonia would from bare-root.

The price difference between bare-root and the alternatives is significant enough to be the deciding factor on a long run. A 25-metre privet bare-root hedge from a UK nursery might cost £75–120 in materials. The same run in pot-grown would be £300–450, and semi-mature installed could reach £2,000–5,000. For a boundary hedge along a Sholden field edge or a long Upper Deal garden, that is a real difference in what the job costs.

Pot-grown: year-round flexibility, and the better choice for exposed positions.

Pot-grown plants are raised in containers from the start, so the root system goes into the ground intact with minimal shock. The penalty is cost and watering. On Deal's sandy coastal-alluvium strip, newly planted container stock on a Walmer seafront plot needs watering every few days in a dry June or July, or the roots will not knit into the surrounding free-draining ground before the following winter.

Griselinia is the species I reach for most often on CT14 first-line seafront sites: salt-tolerant, fast-growing, evergreen and clean-looking. It is rarely available as bare-root from mainstream UK nurseries, so pot-grown is the standard supply route. The spring planting window (March–May) and autumn window (September–October) give the roots the best chance of establishing before temperature extremes arrive.

Escallonia and pittosporum are the other pot-grown standards for exposed coastal planting. Both handle Deal's salt winds better than a quick scan of a generic species list would suggest. For a full ranked comparison of species by salt-tolerance, see the salt-tolerant hedge species guide.

Semi-mature container: the instant-screen option, used sparingly.

Semi-mature hedging plants are 1.2–1.8 metre specimens grown for several years in large containers before sale. They are expensive and they need significant aftercare in the first season. I quote this option when a client has a genuine reason to need a screen in twelve to eighteen months rather than four to six years: a new-build plot with no privacy from the outset, a road-end property in Walmer that has just lost a large tree or section of old hedge, or a seafront boundary where planning or demolition work removed the original planting.

On a CT14 coastal site the watering commitment is not optional. A griselinia or holm oak at 1.5 metres has a substantial leaf canopy to maintain; in a dry August on Deal's free-draining shingle ground that means daily watering for the first summer. Clients who will not be on site through July and August, or who have no irrigation in place, are usually better served by pot-grown planted the previous autumn and accepting the longer wait.

The cost also means that every failed plant matters. A single lost semi-mature griselinia at £40–80 per specimen is a real setback. I always recommend ordering one spare plant per ten metres and keeping it in a sheltered part of the garden as insurance for the first two seasons.

Planting-season calendar for CT14 coastal gardens.

The table below overlays the planting windows for each method against the WCA 1981 nesting-season calendar. The nesting-season column refers to ground disturbance near existing hedge lines, not to new plantings made in open, previously clear ground.

Ground preparation on Deal and Walmer coastal soil.

Deal's coastal strip runs on shingle over alluvium: fast-draining in dry weather, occasionally waterlogged in the lower-lying areas close to the seafront in a wet winter. Mill Hill and the upper edges of Upper Deal have heavier loam over chalk. Kingsdown sits on chalk directly, with thin topsoil on most plots.

For bare-root plantings I prefer a trench over individual holes. A single trench, 30 cm wide and 30 cm deep along the hedge line, makes it easier to spread the roots properly and keeps planting depth consistent. On the shingle-over-alluvium ground I fork the trench base loosely and add bone meal or a slow-release balanced fertiliser around each root collar before backfilling with the original topsoil. I do not import peat or bought compost at this stage: on free-draining ground, imported growing media can hold too much moisture directly against bare roots and encourage rot in a wet winter. A 7–10 cm mulch layer along the full hedge line after planting conserves moisture through the following summer and suppresses couch grass, which is vigorous on Deal's coastal soils.

For pot-grown and semi-mature plants, I soak the root ball thoroughly the night before planting. A potbound root ball that has dried in transit will not rewet properly from a single garden-hose pass; a dry root ball sitting in otherwise damp ground will still fail in the first summer.

Video resource: RHS guide to planting bare-root hedges.

The Royal Horticultural Society's bare-root hedge planting guide (RHS Grow at Home channel, published January 2021) demonstrates the trench method, correct planting depth and firming-in technique clearly. The RHS guidance applies to UK conditions throughout; the main coastal adjustment for CT14 is a thicker mulch layer than their guide suggests, around 10 cm rather than 5 cm, to compensate for the faster drainage on Deal's shingle ground.

Sources: Royal Horticultural Society, "Hedges: Planting Guide" (rhs.org.uk); RHS Grow at Home YouTube channel, "How to plant bare root hedges" (January 2021); Wildlife and Countryside Act 1981 section 1; Health and Safety Executive Dial Before You Dig guidance; Hedges Direct UK bare-root planting guide; RHS advice on pot-grown and container-grown hedging.