Planting a Native Hedge for Birds

Why a Native Hedge Beats a Fence

A native hedge does everything a fence does, and a good deal more besides. It marks a boundary, filters wind, screens an ugly view and muffles road noise — but it also feeds, shelters and houses the birds that visit your garden. A well-planted mixed hedge is one of the single most useful things you can add to a rural plot, a garden edge or a paddock boundary.

Birds use hedges in layers. The dense base gives cover for foraging and roosting, the middle provides nesting sites safe from cats and magpies, and the top offers song posts and a place to survey the ground below. Because hedges run in lines, they also act as corridors — a blackbird or a flock of long-tailed tits can move from one patch of woodland to another without crossing open ground where sparrowhawks have the advantage.

If you plant only one thing this winter, make it a hedge. Bare-root whips are cheap, light to carry and quick to establish, and the window between November and March is exactly when they want to be in the ground.

The Big Three: Hawthorn, Blackthorn and Hazel

A traditional British hedgerow is a mix, and three species do most of the heavy lifting.

• Hawthorn (Crataegus monogyna) is the backbone of almost every old hedge in the country. Thorny, forgiving and fast-growing, it produces creamy May blossom followed by haws in autumn, and its tangled growth is prime nesting territory for dunnocks, robins, blackbirds and chaffinches. It will grow on almost any soil, including heavy clay.
• Blackthorn (Prunus spinosa) flowers in March on bare, jet-black twigs — an early nectar source when little else is open, and often the first hedge in the lane to hum with bees. Sloes follow in autumn and are taken by thrushes and fieldfares once softened by frost. It suckers freely, so give it room to spread or be prepared to mow around it.
• Hazel (Corylus avellana) brings lambs' tail catkins in late winter and nuts in September, which nuthatches, jays and wood mice will race you for. Its leaves feed the caterpillars of dozens of moth species, which in turn feed blue tits and great tits through the breeding season.

As a rough guide, plant roughly half hawthorn, a quarter blackthorn and a quarter hazel, then ring the changes with a few extras:

• Field maple — good autumn colour, tolerant of wet ground.
• Dog rose — hips for winter thrushes, nectar for bees.
• Guelder rose — white flowers, translucent red berries, excellent for berrying birds.
• Holly — evergreen cover and berries that last into the hardest weeks of the year.
• Crab apple — blossom for pollinators, fruit for blackbirds and winter visitors.

Planning: Site, Size and Spacing

Think about the finished hedge before you lift a spade. A mixed native hedge will reach 2–3 metres in five to seven years and can be kept at 1.5 metres if you trim it, so leave clearance from overhead cables, drains and the neighbour's light.

• Plant in a double, staggered row for a thick, wildlife-friendly hedge. Space plants 30–45 centimetres apart within the rows, with the rows 40 centimetres apart. That works out at roughly five to seven whips per metre.
• A single row at 30 centimetres spacing makes a tighter, more formal boundary and is easier to keep neat in a small garden.
• Most native species are happy in full sun or light shade. Hawthorn, hazel and field maple cope with damp ground; blackthorn and holly prefer well-drained soil.
• Leave a rough grass margin of at least 60 centimetres either side and you will get the best from the hedge — this is where many birds prefer to feed.

Planting Bare-Root Whips

Do the job properly once and the hedge will look after itself.

• Clear a strip of grass and weeds at least 60 centimetres wide along the line. Grass is the main killer of young whips.
• Dig a trench or individual holes deep enough to take the roots without curling them.
• Firm the soil back around the roots in stages, then water well to settle the ground and remove air pockets.
• Fit a spiral guard or a cane-and-net guard around each whip — rabbits will strip bark from young stems in a single night.
• Mulch with a generous layer of bark chip or well-rotted compost, keeping it clear of the stems.
• Water in dry spells through the first two summers, giving each plant around ten litres a week rather than a light daily sprinkle.

Cutting for Wildlife, Not Just Neatness

The timing of your trimming matters more than most people realise. Birds nest between March and August, and it is an offence to damage an active nest, so keep the hedge trimmer in the shed until the end of the season.

The best approach is to cut in late winter, ideally in February, and to cut only every second or third year where you can. Aim for an A-shaped profile — wider at the base, narrower at the top — so light reaches the bottom and the hedge does not go bare and leggy. Leave one section uncut each year on a rotation, and you will keep a steady supply of blossom, berries and nesting cover. A hedge managed this way will outlive most fences, and it will be busy with birds the whole time it stands.