When to cut a hedge in Kent
A month by month calendar for the county. Kent runs two to three weeks ahead of most of England, which moves every date on the standard advice.
Why the national advice runs late here
Kent is the warmest and among the driest counties in Britain. Spring arrives earlier, the growing season runs longer at both ends, and hedges here put on more growth in a year than the same species does in the midlands or the north.
The practical effect is that the standard guidance, written for the country as a whole, arrives late. A privet hedge in the Medway towns is in active growth in April while the same hedge in Yorkshire has barely started. A leylandii hedge in the sheltered Weald will take a metre off the calendar in a good year. Waiting for the textbook month means cutting a hedge that got away from you a fortnight ago.
Two local variations sit inside that. The coast at Thanet, Deal, Whitstable and Folkestone is windier and salt-laden, so growth is slower and harder, and coastal hedges tolerate a later autumn cut than inland ones. The Weald clay holds water, so hedges there grow harder in a wet year and the ground stays too soft for towers and platforms well into spring.
Nesting birds and the law
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, and none for a booking that was hard to arrange.
The main UK nesting season runs from roughly 1 March to 31 August. Those dates are guidance rather than law. A blackbird may be on eggs in February and a woodpigeon still sitting in September. What the law asks is whether the nest is in use, not the date on the calendar.
So every entry in the calendar below that falls inside those months carries the same condition: check the hedge face by face before a blade is started, and look again as you work. Where a nest is in use, stop, work a different face if that can be done safely, or come back after the birds have fledged.
A separate rule applies to countryside hedgerows on agricultural land in England, where cutting is prohibited between 1 March and 31 August with limited derogations. Our full position on nesting is set out in the Kent Hedge Standard.
The hedge year, month by month
Written for a Kent garden. Move everything back a week or so for an exposed coastal site and forward a week for a sheltered valley garden in the Weald.
January and February
The heavy work window, and the only sensible one. Deciduous hedges are dormant and bare, so the structure is visible and every stem can be seen. This is when beech, hornbeam, hawthorn, blackthorn, privet and laurel are cut hard, renovated or reduced, and when hedge laying is done.
Do not cut conifers now. A cut made in dormancy sits open and brown until growth resumes in April, and any tender growth exposed by the cut is at the mercy of the frost.
March
The door closes. From 1 March every hedge must be checked for nests before work begins, and in Kent the growing season has usually started, so anything cut now will need cutting again by June. A poor month to book routine work.
Worth doing: finishing any winter renovation begun in February, subject to nest checks, and planting bare-root beech, hornbeam and hawthorn while the ground is still cool and damp.
April
Growth accelerates and nesting is at its height. Very little cutting should happen. Conifers are starting into growth, which makes April the earliest sensible month for a light conifer trim, but the nest risk is at its worst and the hedge has barely put on anything to cut.
Worth doing: feeding, mulching and watering newly planted hedges, and booking the year's visits before everybody else does.
May
The formal hedges wake up. Box takes its first clip in late May or early June, once the risk of a late frost catching the soft new growth has passed. The old rule was to clip box around Derby Day, which in Kent is usually about right. Privet has enough growth by now for its first cut of three.
Do not cut anything without a nest check. May is the busiest nesting month of the year.
June
The first conifer cut of the year. Late June is the sweet spot: the hedge is growing strongly enough to green over the cut within weeks, and there is a full season left for it to do so. Leylandii, western red cedar and Lawson cypress all take their first pass now. Box finishes its first clip if May was cold.
Do not cut in the middle of a hot dry spell. Freshly exposed inner foliage scorches in strong sun, and a hedge cut in a heatwave browns for a fortnight afterwards.
July
Second privet cut, second laurel cut, and topiary tidying. A quiet month for boundary hedges. Anything cut now will put on another flush before autumn, so a July cut on a fast hedge is a holding action rather than the main cut of the year.
Worth doing: watering hedges planted within the last two seasons. In a dry Kent July a young beech hedge will fail from drought long before anything else touches it.
August
The most important month in the hedge year. Beech and hornbeam take their single annual cut now, and the timing is precise: cut in August and the outline holds through winter with a dense hold of copper leaf. Cut in June and the hedge pushes a second flush that needs cutting again. Box takes its second and final clip of the year in late August.
Note: the nesting season nominally ends on 31 August, so most heavy work is booked from the last week of the month onwards. Woodpigeons are the usual late exception.
September
The best single month for most Kent hedges, and the busiest in our diary for that reason. Nesting is over, the season's growth has hardened so a cut line holds rather than sagging, and there is enough warmth left for cut ends to seal before frost. Yew takes its one annual cut now and stays crisp until spring. Conifers take their second or third pass. Any hedge on one cut a year should have it this month.
Book early. Everybody wants September, and there are only so many dry days in it.
October
The second half of the main season and still good. Deciduous hedges can be cut through the leaf drop, evergreens up to about the middle of the month. After that the risk is that a cut stimulates a little soft growth which the first frost then kills, leaving brown tips through the winter.
Worth doing: the last conifer cut of the year, early in the month, and clearing leaf litter out of the hedge bottom before it mats down and rots the base.
November and December
Back into the heavy work window. Reduction, renovation and rescue on deciduous hedges, removal and replanting, and bare-root planting from November onwards, which is both the cheapest and the most successful way to put in a new beech, hornbeam or hawthorn hedge.
Do not cut conifers. Whatever a neglected leylandii looks like in December, the cut will sit brown and open until April, and the work is better done in June.
The same year, by species
If you know what your hedge is, this is the short version. If you are not certain, work through the identification guide first, because every line below depends on getting the species right.
- Leylandii, Lawson cypress, western red cedarTwo or three cuts, late June and early September, with a third in late April or early August on a vigorous hedge. Growing season only. Never into brown wood, in any month.
- YewOne cut, September. A second in late June only where the finish needs to be architectural. Hard renovation in late winter or early spring, one face at a time.
- BoxTwo clips, late May or early June and again in late August. Avoid clipping in bright hot sun, which scorches the fresh cut foliage. Check for blight and caterpillar at every visit.
- Beech and hornbeamOne cut, August, and that is genuinely all. Hard reduction in January or February while dormant and bare.
- PrivetTwo or three cuts between May and September. It grows continuously in Kent and will not hold a line on one cut a year.
- Cherry and Portuguese laurelTwo cuts, late spring and again in September, by secateurs on cherry laurel so the leaves are not chopped through. Hard renovation in late winter.
- Hawthorn, blackthorn and mixed native hedgesWinter, from November to February, once the berries have been taken by birds. On agricultural land the 1 March to 31 August prohibition applies.
- Griselinia and escalloniaTwo cuts, late spring and late summer. Escallonia is cut straight after flowering. Both tolerate a later autumn cut on the coast than an inland hedge would.
The four mistimed cuts we are called out to fix
- The conifer cut in December. Taken in dormancy, so the cut face sits open and brown for four months and the hedge looks worse all winter than it did before the work. Wait for June.
- The beech cut in June. Neat for six weeks, then a full second flush that has to be cut again in September, and a thinner hold of winter leaf. One August cut does the job of both.
- The evergreen cut in late October or November. The cut stimulates a small flush of soft growth with no time to harden, and the first hard frost burns it. The hedge spends the winter brown-tipped.
- Any cut in a heatwave. Foliage that has spent the year shaded inside the hedge is suddenly exposed to full sun and scorches. Cut early in the day, or wait for the weather to break.
Timing questions we are asked
What is the best month to cut a hedge in Kent?
September, for most garden hedges. Nesting is over, the season's growth has hardened so the cut line holds, and there is still enough warmth for the cut ends to seal before the first frosts.
If your hedge gets one cut a year, book it for September. Formal box and yew want an earlier clip as well, in late May or early June, and fast conifers need two or three cuts spread through the growing season rather than one.
Can I cut my hedge in March?
You can, but 1 March is the start of the main nesting season, so from that date the hedge must be checked for active nests before a blade is started. Under the Wildlife and Countryside Act 1981 it is an offence to damage or destroy a nest in use.
March is a poor month regardless. In Kent the growing season has already begun, so anything cut in March needs cutting again by June. Heavy work belongs to the winter before it and maintenance to the late summer after it.
When should leylandii be cut?
While it is in active growth, which in Kent runs from about late April to mid September, so the cut greens over rather than sitting brown all winter. Two cuts, around late June and early September, hold most hedges. Three are needed to keep a hedge at a fixed height in good soil.
Avoid cutting in a heatwave, when exposed foliage scorches, and avoid cutting after mid September, when frost will catch the growth a late cut pushes. Never cut back into brown wood in any month, because leylandii does not reshoot from it.
When should a beech or hornbeam hedge be cut?
Once a year, in August. Cut earlier and the hedge pushes a second flush that needs cutting again before winter. Cut much later and the cut ends do not harden before the frosts. An August cut also gives the best winter display, because a hedge cut then holds its dead copper leaves more densely than one cut in June.
Is there a legal cutting season for farm hedgerows?
Yes, and it is separate from the law covering garden hedges. Cutting most countryside hedgerows on agricultural land in England is prohibited between 1 March and 31 August under the hedgerow management rules, with limited derogations where a hedge beside a road or footpath presents a hazard, and for newly sown fields. Domestic garden hedges are not covered by that rule, but they remain covered by the Wildlife and Countryside Act 1981, which protects any nest in use whatever the date.
Let somebody else watch the calendar
HedgeCare exists because the right month is easy to know and easy to miss. We set the cycle for your species, book the visits, and remind you before we come.