Cherry laurel hedges in Thanet: three cutting myths that leave a brown, scalped-looking hedge.
Prunus laurocerasus is the dominant formally-clipped hedging plant in sheltered Thanet gardens: Broadstairs CT10 front boundaries, the inland Ramsgate CT12 back gardens, the sheltered avenues of Minster and along the Sarre Penn. The plant is vigorous, dense and properly evergreen. It is also almost universally cut badly. Three myths about tools, timing and renovation keep producing the same result across Thanet every summer: a hedge that looks distinctly worse after cutting than it did before.
Myth 1: “A powered hedge trimmer gives the best finish on cherry laurel.”
This is the tool mistake I see most often in Broadstairs and Ramsgate: a cordless or petrol hedge trimmer run along cherry laurel and producing what looks like a tidy outline but on close inspection has every large leaf sliced in half, the cut surfaces browning over the following week into rust-brown marks that stay for months.
The reason is straightforward. Cherry laurel leaves are large (8 to 15 cm) relative to the blade gap on a standard powered hedge trimmer. When the trimmer blade passes through the hedge, it slices the leaf lamina wherever the leaf falls across the blade, rather than cutting cleanly through a stem. The cut surface oxidises and turns brown within days. On a beech or a griselinia, where the leaves are smaller and the damage is minimal, the browning is barely visible. On cherry laurel the cut marks are prominent and they stay brown until the next growth flush partially covers them, which on a September cut can mean looking at a brown-flecked hedge all winter.
Fact: For a presentable finish on cherry laurel, the correct method is individual stem pruning with loppers or sharp hand-pruners, removing whole stems back to a lateral bud or junction rather than slicing through the foliage. This takes longer than running a trimmer along the hedge but produces a result that looks clean immediately and stays clean. The RHS states this plainly for Prunus laurocerasus: large-leaved laurels pruned with a hedge trimmer will have ugly brown cut edges on many of the leaves; use secateurs instead.
For informal cherry laurel allowed to grow in a more natural rounded shape, a powered trimmer once a year is a workable shortcut, because the informal habit masks the cut leaves and you are not going for a precise edge. The mistake is applying a trimmer to a formally clipped boundary hedge and expecting a formal result.
Myth 2: “Cherry laurel is evergreen so cutting timing doesn’t matter.”
Two reasons timing matters for cherry laurel on the Isle of Thanet, and both are significant.
The WCA 1981 nesting window. Cherry laurel is dense, fast-growing and widely used as nesting habitat by blackbird, dunnock, house sparrow and wren across Thanet's sheltered suburban gardens. Cutting between 1 March and 31 August is legal only if a competent visual nest check has confirmed no active nesting. Under section 1 of the Wildlife and Countryside Act 1981, intentionally destroying an active bird's nest carries a penalty of up to £5,000 per offence. The nesting season on Thanet's southern coast runs right through May, June, July and into August; cherry laurel hedges in Broadstairs CT10 and inland Ramsgate CT11 are actively used by nesting birds through those months.
Nesting season and cherry laurel
The safe cutting window for any hedge on the Isle of Thanet is September to late February as the default. If you cut between 1 March and 31 August, walk the hedge slowly on both sides first: look through the outer canopy into the body of the hedge, listen for alarm calls, watch for birds flying repeatedly to the same point. Dense cherry laurel conceals an active nest easily. If you see or hear signs of nesting, leave that section alone. Full nesting-season detail is at Nesting, hedgehogs & Thanet's wildlife law. Penalty for disturbing an active nest: up to £5,000 per offence under section 1 of the Wildlife and Countryside Act 1981.
Plant timing on Thanet chalk. The best cutting windows for cherry laurel itself are late spring (May, after any late frosts have passed) or late summer (late August, before the nesting season closes on 31 August). Cutting in September is acceptable but produces a growth flush that may not fully harden before the coastal frosts; on exposed CT8 Westgate-on-Sea positions or clifftop CT9 Cliftonville sites the soft new growth is vulnerable to salt-wind scorch through October and November. October and later cuts should be avoided: cherry laurel responds to cutting with a vigorous new flush, and that flush should not be triggered going into a Thanet coastal winter.
Myth 3: “Cherry laurel will bulk up from a hard cut-back.”
This myth has some truth in it but is applied too broadly across Thanet. Cherry laurel, unlike leylandii, can regenerate from old wood: stems cut back to near the base will produce new growth from dormant buds along old wood. In that sense, renovation cuts are possible and can work well on cherry laurel. What the myth misses is the specific conditions on Thanet's chalk-and-sand geology.
A very hard cut-back removes most of the leaf area, and leaf area is what drives water uptake. On Thanet's fast-draining Margate Chalk and Thanet Sand Formation, where the soil loses moisture quickly in a dry June, a cherry laurel that has had most of its foliage removed is under genuine water stress within weeks of a dry spell starting. The recovery flush that should bulk up the hedge stalls: the plant puts what energy it has into keeping the remaining stems alive rather than producing the vigorous new growth that renovation is supposed to deliver. Gardens in Broadstairs CT10 and the sheltered inland streets of Ramsgate CT12 handle a hard cut-back better than exposed clifftop sites on thin chalk over the Margate Chalk Member. Those clifftop positions are the highest-risk locations for renovation failure on Thanet.
The practical approach for cherry laurel renovation on Thanet's chalk geology:
- Commit to watering if you cut hard. A deep watering once a week through May, June and July is the minimum on fast-draining chalk. Surface watering every few days is worse than nothing: it builds shallow roots that collapse when the surface dries. The detail on deep-infrequent watering and why it matters on chalk-and-Thanet-Sand geology is in The aftercare mistake that kills more new hedges on Thanet than bad soil or bad weather.
- Stagger the renovation over two seasons in exposed positions. Cut one face hard in year one (late August), allow recovery, then reduce height in year two. This keeps enough leaf area functioning at all times to sustain the water uptake the plant needs on a dry chalk site.
- Mulch the base after the cut. Ten centimetres of wood chip, kept clear of the stems themselves, slows moisture loss from the chalk gravel considerably and makes the difference between a recovery that works and one that stalls before August.
Cherry laurel on the Thanet coast: where it belongs and where it doesn’t
Cherry laurel handles Thanet's chalk soil well but is not a salt-belt plant. In sheltered inland positions across Broadstairs CT10, Minster, Sarre and the back-street gardens of Ramsgate CT12, it thrives and maintains a dense formal hedge with good results. In exposed positions facing the Thames Estuary or the southern North Sea, the salt wind scorches cherry laurel's large leaves more noticeably than it does smaller-leaved species, and the plant loses some of its reliably-evergreen character in a hard coastal winter.
For coastal Thanet positions (Cliftonville CT9 seafront, Westgate-on-Sea CT8, the Ramsgate CT12 cliff-edge strip), escallonia and griselinia are a better starting point. Both handle the salt-wind load better than cherry laurel. The full comparison, including how cherry laurel sits relative to the coastal species, is in the Chalk-and-salt: the Thanet species matrix.
The short version
- Use secateurs or loppers, not a powered trimmer, on a formally clipped cherry laurel. Trimmers slice the large leaves and leave brown marks for the rest of the season. Remove whole stems back to a bud or junction.
- Cut in late May or late August, not autumn, not early spring. Avoid cutting between 1 March and 31 August without a nest check first.
- For hard renovation on Thanet chalk, water deeply and mulch the base. The hedge cannot bulk up on a chalk site if the soil moisture runs out in June. Stagger the cut over two seasons if the hedge is in an exposed or thin-chalk position.
Not sure whether your laurel hedge needs a different approach or a different species?
Send your postcode and a photo of the hedge to hello@thanethedges.co.uk, or call or WhatsApp 07763 100 477. Most brown-after-cutting results on Thanet cherry laurel are a tool problem, not a disease problem. I can tell you which it is and what a better approach looks like. No obligation.
Sources: Royal Horticultural Society, Prunus laurocerasus pruning guide (rhs.org.uk/plants/prunus-laurocerasus); Hopes Grove Nurseries, cherry laurel hedge planting and care guide (hopesgrovenurseries.co.uk); British Geological Survey, Margate Chalk Member and Thanet Sand Formation mapping for the Isle of Thanet (bgs.ac.uk); Wildlife and Countryside Act 1981, section 1 (active nest offence and penalty); RHS coastal hardiness and conditions guidance for Kent hedging species. YouTube direct access was unavailable from this session due to a network proxy restriction; sources were verified via web search cross-reference.