Guides · Dover Hedges & Tree Services

Rabbit damage to hedges on Dover's chalk downland: guards, fencing and species choice

Rabbits thrive on chalk. Dover's free-draining downland, from the plateau above the port to the villages along the A2 corridor at Lydden, Temple Ewell and Guston, supports some of the densest rabbit populations in east Kent. The friable chalk below the thin rendzina topsoil is easy to burrow through, and the close-cropped downland grassland provides year-round grazing for large, long-established warrens. Residents planting new hedges on the downland edge, on the Western Heights, above Capel-le-Ferne or in the rural ground beyond the A20 regularly find unprotected hedging plants stripped to the stem or killed outright before their first spring.

This guide covers how to recognise rabbit damage, choose the right individual guards or perimeter fencing, match species to sites where rabbit pressure is highest, and know how long protection needs to stay in place. It is a companion to our deer damage guide, which covers the roe deer and muntjac that share much of the same habitat.

What does rabbit damage look like?

Rabbit damage takes two forms depending on how old and woody the plant is. On soft new growth and young whips planted in the bare-root season, rabbits bite off shoots and leaves cleanly, often removing the growing tip. A hedging plant that is repeatedly nipped back to the same height without making any upward progress is almost certainly being grazed on each new flush of growth.

On woody stems where bark has formed, the distinctive sign is stripped bark: a band of bare wood at stem level with shallow parallel grooves running across the exposed surface at roughly 2 mm intervals. These grooves are the marks of the incisor teeth. The RHS notes that rabbits can kill young trees and shrubs this way, and the gov.uk guidance on protecting trees from mammal damage confirms that rabbit damage is typically confined to the lower 50 cm of a stem: the standing reach of a rabbit.

Complete girdling is the most serious form of attack, where the bark is removed all the way around a stem so that no intact cambium bridges the wound. A fully girdled stem dies above the wound because the flow between roots and leaves is severed. Young beech, hornbeam, field maple and privet whips are especially vulnerable as their stems are thin enough for a rabbit to work around in a single sitting.

The height of the damage tells you the culprit. Rabbit browsing stops at approximately 40 to 50 cm. Deer browsing begins above that level and can reach 1.5 m or higher depending on species. Where damage is present at both heights on the same plant, both animals are likely visiting. Our deer damage guide covers distinguishing the two in more detail.

When is rabbit pressure highest?

The most damaging window runs from late October to early March, coinciding almost exactly with the bare-root hedge planting season. In late autumn and winter, as chalk grassland roots cool and become difficult to access and the natural food supply narrows, rabbits extend their foraging to include hedging plants they would pass by during summer. A new hedge planted in late November and left unprotected can be substantially destroyed before April.

Hard frost intensifies the problem on Dover's chalk plateau. When the thin rendzina soils on the Western Heights, at Langdon Cliffs and across the open downland above Alkham and Capel-le-Ferne freeze overnight, grasses and root material become unavailable and rabbits shift to bark stripping and stem browsing much more aggressively. Temperatures on the exposed chalk above 80 m regularly dip lower than those recorded in the town centre or the sheltered Dour valley, and this intensification shows in the damage patterns: properties planting on the downland edge see worse winter damage than those in the older streets around Castle Street and the lower Maison Dieu area.

Spring rabbit populations are also high, as the breeding season in February and March produces large numbers of young animals entering their first summer. New soft growth on establishing hedging plants in April and May attracts browsing at a time when guards are sometimes removed too early.

What type of individual guard works best?

For most domestic hedge planting in Dover, guarding individual plants is the most practical first approach. Two types are in common use: spiral guards and solid tube shelters.

Spiral guards are open-mesh polypropylene spirals that wrap around the stem of an individual plant. They are quick to fit, generally reusable for two or three planting seasons, and allow air and light to reach the stem, which reduces the soft, etiolated growth sometimes seen inside solid tubes. For rabbit exclusion the guard must be at least 60 cm tall: this covers the rabbit's 40 to 50 cm standing reach with a margin above. Ashridge Trees, a UK hedging specialist, stock spiral guards at 60 and 75 cm heights specifically for hedging use alongside their standard rabbit-guard range.

On open downland sites above Dover where brown hares are also present, 90 cm spiral guards give a better margin of safety. Brown hares can stand on their hind legs and browse slightly higher than rabbits: on an exposed chalk plateau site at Alkham or along the ridge above Martin Mill, the extra height is worth having.

Each spiral must be fixed to a supporting stake. Dover's chalk creates specific difficulties: the rendzina topsoil is typically only 10 to 25 cm deep and is followed by a flint-rich chalk layer that resists driving a light stake by hand. Use a metal bar to make the initial hole through the flint layer before driving the wooden stake down; a stake that sits only in the disturbed soil of the planting hole and does not reach firm chalk below it will shift or pull out in Channel gales. Tie the guard at two points up its height rather than one if wind exposure is a concern.

Solid tube shelters are the better choice where deer pressure accompanies rabbit pressure, where the chalk site is very exposed, or where you want to use the warm microclimate inside the tube to accelerate establishment on a thin, drought-prone rendzina. A 60 cm tube is the minimum height for rabbit exclusion. A 1.2 m tube also protects against roe deer and muntjac, both of which are present on the downland fringe between Dover and the Alkham valley. The internal microclimate of a solid tube can significantly speed early growth on exposed chalk sites, where wind desiccation and summer drought are the main threats to young hedging. The trade-off is that plants grown in tubes sometimes produce softer, more elongated stems that need hardening gradually once the tubes are removed.

How do you fence a whole hedge run against rabbits?

Where rabbit pressure is very high, where a long hedge run makes individual guarding impractical, or where previous plantings have been destroyed repeatedly, perimeter fencing along the planting trench is more reliable long-term than individual guards.

Standard rabbit fencing uses 31 mm hexagonal wire mesh stretched between wooden posts at 2 m intervals. The specifications that work reliably on Dover's chalk differ from standard fencing guides, because the loose chalk subsoil below the thin topsoil makes burrowing under a buried fence section easier than on heavier soils. The gov.uk technical guidance on protecting trees from mammal damage specifies a minimum burial depth of 30 cm to exclude rabbits; on Dover chalk, 45 cm gives a significantly more reliable result.

The key to preventing burrowing on chalk is an underground L-shaped apron. Bury 30 to 45 cm of the mesh vertically, then bend the buried section outward at roughly 90 degrees, forming a horizontal run of about 30 cm facing away from the hedge. A rabbit approaching from outside the hedge encounters the apron and cannot easily follow it down to burrow under the fence; a rabbit approaching from inside the hedge encounters only the vertical section, where the buried apron faces away from it rather than toward it. This asymmetric geometry is consistently more effective on chalk than a simple straight-down burial.

Above ground, the mesh should extend at least 90 cm in height. A note on mesh gauge: standard 50 mm hexagonal chicken wire does not exclude young rabbits, which can squeeze through. Use 31 mm hexagonal wire mesh sold specifically for rabbit fencing, or 25 mm welded square-mesh wire, which is more rigid and harder to push through. Fold any cut mesh edges inward against the wire before fixing to the posts to eliminate sharp projections at ground level.

Which hedging species need the least protection?

Not all hedging plants are equally attractive to rabbits. Spiny species are the most naturally resistant once their defensive characteristics have developed, and toxic species are almost never browsed.

Yew (Taxus baccata) is toxic to rabbits and is rarely browsed. This makes it one of the most practical choices for sites with very high rabbit pressure on Dover's chalk downland: it needs minimal guarding after the first season once the stems have thickened slightly. Yew also thrives on chalk at pH 7.5 to 8.0, is native to the downland, and regenerates well from hard renovation cuts.

Holly (Ilex aquifolium) is spiny once the mature spiny-leaved growth develops and is rarely browsed at any age once established. Young holly transplants with soft, immature leaves are more vulnerable in their first year and should be guarded initially.

Hawthorn and blackthorn become self-protecting as their lateral spines develop, which typically happens by year three to four from a bare-root whip. Young unspined stems are very vulnerable and must be guarded for the first two to three growing seasons. Both species are native to Dover's chalk downland, are among the best wildlife hedges in east Kent, and establish reliably on thin rendzinas.

Berberis is highly spiny from a young age and is rarely browsed at any stage. Pyracantha is similarly spiny and is rarely browsed by rabbits. Both make effective boundary hedges on exposed downland sites where maintaining guards over a long run is difficult.

The most vulnerable species are those used for formal hedging: beech, hornbeam, field maple, hazel, privet, cherry laurel and all young conifers. These have smooth, palatable bark and no physical deterrent. On downland sites at Alkham, Temple Ewell and the chalk plateau above the port, these species consistently require full individual guard protection for three to five years. Our bare-root planting guide covers the planting programme and species selection for Dover chalk, and our establishment aftercare guide covers first and second summer care on free-draining rendzinas.

How long do guards need to stay in place?

The standard advice is three to five years. The accurate answer depends on the species and the pressure at the specific site.

A beech or hornbeam whip planted at 40 to 60 cm is pencil-thin and highly vulnerable at planting. By year three it may be 80 to 100 cm tall and starting to thicken, but the bark is still relatively soft and the stem narrow enough for a rabbit to girdle in a single night. By year four to five, stem diameter and bark toughness on most non-spiny species have reached the point where rabbits cannot strip bark effectively. For beech, the waxy grey bark becomes noticeably harder by year four to five and significantly less attractive to rabbits.

Spiny species such as hawthorn and blackthorn can usually have guards removed at year three once lateral spines are well developed. On very exposed sites or where hare pressure is high alongside rabbits, holding to year four is prudent.

Check guards once a year in early spring. Signs that need attention: a spiral splitting along its seam and exposing the stem; a guard that has begun to tighten around the stem as it has thickened (rare with spirals, more common with wire cylinders that were tied too snugly at installation); stakes that have been pulled out by high winds or loosened by frost-heave in the chalk; roots that have begun growing around the outside of a solid tube base. Remove all guards and stakes once the hedge is genuinely self-protecting and the stems are sturdy enough that a rabbit cannot damage them effectively overnight.

Common questions about rabbit protection in Dover gardens

How do I tell if rabbits are damaging my hedge rather than deer or another cause?

Rabbit damage has two signatures. On soft growth it looks like a clean bite at an upward angle, removing leaves and shoot tips from ground level up to about 40 to 50 cm. On woody stems it looks like stripped bark with shallow grooves about 2 mm wide running across the exposed wood: the width of rabbit incisors. The critical detail is height: rabbit browsing stops at approximately 40 to 50 cm from the ground. Deer browsing starts above 40 cm and can reach 1.5 m or higher. If damage is present at both levels on the same plant, both animals may be visiting. See our deer damage guide for more on distinguishing the two.

What height do rabbit guards need to be for hedging plants in Dover?

A minimum height of 60 cm is needed to exclude rabbits reliably. On open downland sites above Dover where brown hares are also present, 90 cm spiral guards give a better safety margin, as hares can stand on their hind legs and browse slightly higher than rabbits. Solid tube shelters at 60 cm are the minimum for rabbit exclusion; 1.2 m tubes also provide deer protection on the downland fringe.

How deep does rabbit-proof fencing need to be buried in Dover chalk?

The minimum burial depth to prevent burrowing is 30 cm, but on Dover's loose chalk 45 cm is more reliable. Bend the buried section outward at roughly 90 degrees to form an L-shaped underground apron facing away from the hedge: this stops a rabbit burrowing straight down at the fence base. Use 31 mm hexagonal mesh or 25 mm welded square-mesh wire; standard 50 mm chicken wire does not exclude young rabbits.

Which hedging species are least attractive to rabbits on Dover chalk?

Yew (Taxus baccata) is toxic and almost never browsed. Holly (Ilex aquifolium) is spiny and usually left alone once the spiny leaves develop. Hawthorn and blackthorn become self-protecting by year three to four as their lateral spines form. Berberis and pyracantha are highly spiny and rarely browsed at any age. Most vulnerable and always needing guards for three to five years: beech, hornbeam, field maple, hazel, privet, cherry laurel and conifers.

Why are rabbits a particular problem on Dover's chalk downland?

Dover's chalk is near-ideal rabbit habitat. The free-draining, friable chalk below the thin rendzina topsoil is easy to burrow through and the close-cropped grassland of the downland plateau supports large, long-established warrens. Downland villages at Alkham, Lydden, Temple Ewell, Capel-le-Ferne, Guston and Martin Mill all have significant populations. In winter, when the chalk ground cools and grass roots are difficult to access, rabbits across east Kent's downland turn to bark stripping much more aggressively, precisely when bare-root hedge planting is also at its peak.

How long do rabbit guards need to stay on hedging plants?

Most species need three to five years. Spiny species such as hawthorn and blackthorn become self-protecting by year three once lateral spines are well developed. Non-spiny species such as beech, hornbeam and privet can still be vulnerable at four years on high-pressure downland sites: extending protection to year five is prudent above the port on the Western Heights and at downland-edge properties at Alkham and Temple Ewell. Check guards in spring each year for splitting, tightening and loose stakes; remove all guards and stakes once the hedge is genuinely self-protecting.

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