Planting a Hedgerow for Birds and Insects

Why a Hedgerow Earns Its Keep

A good hedgerow is the hardest-working thing on a smallholding. It marks a boundary, shelters stock and crops from wind, soaks up rain, and quietly feeds and houses hundreds of species you will never even see. On a windy three-acre plot, a mixed native hedge can raise soil temperatures on the leeward side enough to bring on your early potatoes a fortnight sooner. For birds, it is a larder, a nursery, and a motorway all in one.

If you have a bare fence line, a tired post-and-rail boundary, or a gap where a hedge once stood, this winter is the time to put something back. Bare-root whips are cheap, light to carry, and quick to establish. A hundred plants will give you thirty metres of future hedgerow for the price of a decent pair of boots.

Choosing Native Species That Work for Wildlife

Native species support native insects, and native insects feed nestlings. A single hawthorn can host over a hundred species of moth and bug; an exotic evergreen will host almost none. Aim for a backbone of three or four strong species, with a few extras for variety.

• Hawthorn – the classic. Dense, thorny, brilliant nesting cover, May blossom for pollinators, and haws that feed redwings, fieldfares and blackbirds well into winter.
• Blackthorn – suckers freely to fill gaps, flowers early on bare stems for the first bees of the year, and carries sloes for gin and for thrushes.
• Hazel – shade-tolerant, coppices beautifully, and its catkins feed early pollinators while the nuts feed dormice, jays and wood mice.
• Field maple – good autumn colour, aphid-rich leaves, and seeds eaten by finches.
• Dog rose and guelder rose – hips and berries, plus nectar on the wing.
• Holly and ivy – evergreen cover and a late-winter berry crop when everything else has gone.

If your soil is heavy clay, add spindle and wild privet. On lighter, chalky ground, wayfaring tree and buckthorn do well. Keep an eye out for local provenance stock; it establishes faster than plants raised from continental seed.

Getting the Mix and Structure Right

Variety beats uniformity. Plant in blocks of five to seven of one species, then switch to another, rather than alternating plant by plant. This gives each species room to grow naturally and creates the uneven, thick-and-thin profile that birds love.

Aim for roughly 60 per cent thorny species for nesting cover, 30 per cent berry and nut bearers for food, and 10 per cent climbers and taller growers for structure. Leave a couple of standard trees — oak, crab apple or wild cherry — every twenty or thirty metres if space allows. They lift the hedge above the browsing line and give song posts.

Planting Bare-Root in the Dormant Season

Plant between November and early March, whenever the ground is not frozen or waterlogged. Bare-root whips ordered in autumn will arrive dormant and ready.

Prepare a strip about a metre wide, clearing grass and perennial weeds by hand or with a strimmer. Grass is the main killer of new hedges — it competes ruthlessly for water. Mark out a double row: rows 40cm apart, plants 35–45cm apart within the row, and staggered so the second row sits opposite the gaps in the first.

Firm the plants in at the same depth they were grown, then cut every whip back hard to about 15–20cm above ground. It feels brutal, but it forces a bushy base rather than a leggy, gappy line. Fit a spiral guard to each plant to see off rabbits and voles, and mulch with well-rotted manure or bark chippings, keeping it clear of the stems.

Aftercare in the First Three Years

Water thoroughly in the first two summers if rainfall is short. Keep a metre either side of the hedge mown or strimmed, and hand-weed around the bases until the plants are chest-high. A slow-release fertiliser is seldom needed on decent ground; mulch is enough.

Do not trim the young hedge except to tidy the sides lightly. Let it grow upwards for at least three years. A hedge that is clipped from infancy never develops the dense, thorny heart that a blackbird needs.

Managing a Hedge for Birds and Insects

Once established, cut on a three-year rotation — a third of the length each winter — so there is always fruit, cover and undisturbed habitat somewhere in the line. Flail in late January or February, after the berries have been stripped, and never cut between March and August when nests are active.

Trimming to an A-shape, wider at the base, keeps the bottom dense and shaded. Leave odd corners to grow tall, and let ivy and honeysuckle scramble through. Within a few seasons you will hear the difference: more birdsong in spring, more bees in the blossom, and a boundary that does three jobs at once.