Planting a Native Hedge for Birds

Why a native hedge earns its space

Few garden features work as hard as a native hedge. Plant one along a boundary and you are not just marking a line — you are building a nesting bank, a larder and a corridor for wildlife all at once. A well-grown hawthorn hedge can hold several pairs of nesting birds within a few metres, and its thorns give them protection from cats, magpies and sparrowhawks.

Native species also run on the right timetable. Our insects evolved alongside them, so a native hedge supports far more caterpillars, aphids and beetles than a clipped non-native evergreen. Those insects feed chicks through spring, and the berries and nuts that follow see birds through the lean months. Below the canopy, leaf litter and a tussocky base shelter hedgehogs, shrews, voles and frogs.

If your boundary is currently a bare fence or a gappy line of dying conifer, fronting or replacing it with a mixed native hedge is one of the highest-value changes you can make.

The three stalwarts: hawthorn, blackthorn and hazel

You can build an excellent bird hedge from just these three, and plenty of fine traditional hedgerows are little more than that.

• Hawthorn (Crataegus monogyna). The backbone of the British hedgerow. Dense, thorny, forgiving of almost any soil, and covered in haws each autumn. Its May blossom feeds early pollinators, and its tangle is prime nesting territory for dunnocks, robins, blackbirds and finches.
• Blackthorn (Prunus spinosa). Flowers on bare wood in March, often the first blossom of the year, then carries sloes into winter. It suckers freely, making an impenetrable thicket — ideal cover. Give it room, or plant it where spreading does not matter.
• Hazel (Corylus avellana). Catkins in late winter, soft leaves for moth larvae, and nuts in autumn that jays, wood mice and squirrels will race you for. Hazel responds beautifully to coppicing and can be cut hard every few years to keep the hedge bushy.

Widen the mix if you have room: field maple, dog rose, guelder rose, wild cherry, rowan and spindle all add flowers, hips, berries and colour. A hedge of five or six species will always outperform a single-species one.

Planning before you dig

Native hedging is sold bare-root from November to March, which is by far the cheapest way to buy it and the easiest way for it to establish. Order in autumn for delivery in the dormant season.

For a thick, bird-friendly hedge, plant a double staggered row, with plants about 40cm apart within each row and the two rows 40cm apart — roughly five plants per metre. A single row at 45cm spacing will work if space is tight, but it will never be as dense. Allow at least 1.5m of width for a manageable hedge, and up to 3m if you want it tall and wildlife-rich.

Run the hedge along the sunniest boundary you can spare. A south or west-facing edge warms up sooner in spring, which means more insects on the wing when chicks need feeding. Check for underground services first, and keep the line clear of drains.

Planting and the first two years

Clear a strip at least 60cm wide on each side of the line and dig it over, removing perennial weeds such as couch grass and bindweed. Left in place, these will outcompete young whips.

• Soak bare-root plants for an hour before planting.
• Dig a trench to the depth of the roots and fork the base to break up any pan.
• Set the plants out, fan the roots, then backfill in stages, firming as you go.
• Water each plant in well, even if the soil is already damp.
• Mulch the whole strip with well-rotted compost or bark, 5–8cm deep, keeping it clear of the stems.

Water thoroughly in dry spells for the first two summers, especially the first. Top up the mulch and hand-weed rather than reaching for weedkiller. Do not trim the plants at all in year one — let them build leaf and root. In the second winter you can tip back the leaders lightly to encourage bushy growth from the base.

Cutting for birds, not just tidiness

Timing matters more than technique. The nesting season runs roughly from March to August, so never cut a hedge during that window. Cut in late January or February instead, while the hedge is dormant and before birds start prospecting.

Resist the urge to keep it box-neat. A hedge allowed to reach 1.5–2m and to flower and fruit properly will feed and house far more wildlife than one clipped to knee height every year. If you must control it, trim only one side or one section annually, rotating around the hedge, so there is always older growth carrying berries.

Where you can, let a plant or two grow up into a small tree, and leave the base uncut with a fringe of long grass and leaf litter beneath it. These small untidinesses are exactly what hedgehogs, voles and over-wintering insects need. And if you have the space and the patience, laying a hedge in the traditional way every decade or so will rejuvenate it and keep it dense at the base for another generation of nesting birds.