Why a Hedge Beats a Fence

A close-boarded fence keeps the neighbours at bay, but it offers almost nothing to the birds, bees and small mammals that share your garden. A mixed native hedge, by contrast, is a living structure: it flowers, fruits, drops leaves, and provides somewhere to hide, feed and nest every month of the year. In a typical British suburban garden, a hedge can support dozens of invertebrate species, half a dozen regular nesting birds, and — if you're fortunate — hedgehogs, shrews and the occasional dormouse in rural counties.

The good news is that hedges are forgiving. Plant them well, prune them at the right time, and they will look after themselves for decades.

Choosing Your Species Mix

The trick is to blend species so that something is always offering food. A single-species leylandii or privet hedge is a windbreak and little else. Aim for five or six natives, planted in blocks of three to five of the same species rather than one-of-everything, so each plant has a chance to form a decent crop of flowers or berries.

• Hawthorn — the backbone of the British hedgerow. Dense, thorny, superb nesting cover, with haws in autumn that redwings and fieldfares strip in hard weather.
• Blackthorn — early white blossom for pollinators in March, sloes in autumn, and the larval food plant of the brown hairstreak butterfly.
• Hazel — catkins in late winter, nuts in September, and coppery autumn foliage. Squirrels, mice and dormice all rely on it.
• Holly — evergreen shelter and winter berries that thrushes and blackbirds save for the coldest weeks.
• Field maple — good autumn colour, winged seeds, and a favourite of aphids, which in turn feed blue tits.
• Guelder rose or dog rose — summer flowers, bright autumn berries, and a softer texture to break up the thorns.

If your soil is heavy clay, hawthorn and blackthorn will thrive. On lighter, chalky ground, add wayfaring tree or spindle. In a small garden, a single row of five to seven plants is plenty.

Planting for a Thick, Nesting-Ready Base

Order bare-root plants between November and March — they establish far better and cost a fraction of potted stock. November to early December is ideal, while the soil is still warm.

• Clear a strip at least 60cm wide and dig in plenty of well-rotted organic matter.
• Space plants 30–45cm apart in a double, staggered row for a dense hedge, or 45cm apart in a single row for something slimmer.
• Plant to the same depth as the nursery mark, firm in well, and water thoroughly.
• Fit spiral guards against rabbits and mulch with bark chip, keeping it clear of the stems.
• Water regularly for the first two summers. After that, roots should find their own way.

Don't be tempted to cut the new hedge back hard in its first year. Let it put on height and root, then start shaping in the following winter.

Pruning Without Losing the Birds

The single most important rule: never cut a hedge between March and August. That is the nesting season, and a trimmer through a hedge in May will destroy nests, eggs and fledglings in seconds. It is also an offence under the Wildlife and Countryside Act to damage a nest in use.

Cut in late winter instead, ideally January or February, before birds begin prospecting for sites. Shape the hedge so the base is wider than the top — an A-frame profile lets light reach the lower stems, keeping the hedge dense to the ground rather than bare and leggy. If your hedge is already overgrown, take it back over two or three winters rather than in one brutal session, and rotate which section you cut so there is always some mature growth left standing.

The Forgotten Ground Layer

Much of a hedge's value lies at its feet. Leave a metre or so of rough grass and leaf litter along the base rather than strimming it flat — this is where hedgehogs nest, beetles overwinter and frogs shelter. A small pile of prunings or logs tucked beside the hedge adds another layer of habitat. Underplant with native bulbs such as snowdrops, native daffodils and wood anemone for early nectar, and let ivy grow up one section: its late flowers are one of the best autumn nectar sources in Britain, and its berries feed birds in spring.

A Hedge That Gives All Year

Think of the hedge as a calendar. February brings hazel catkins; March the blackthorn blossom; May the hawthorn — "may" in every sense. Summer offers shelter for fledglings and cover for moths. Autumn delivers haws, sloes, hips and nuts. Winter holds holly berries and dense evergreen shelter when the north wind bites.

Give it three years to knit together and it will reward you for thirty. Plant it, prune it kindly, and leave the leaves where they fall.