Why our gardens matter more than ever

Hedgehogs are in trouble. Numbers in Britain have fallen sharply over the past few decades, and for a species that once rustled through every hedgerow after dark, the countryside alone is no longer enough. The good news is that ordinary gardens — suburban plots, village allotments, half-acre rural patches — have quietly become some of the most important habitat we have left. A single well-managed garden is useful. A street of them, joined together, is a lifeline.

Hedgehogs are nocturnal, and that shapes everything we can do for them. They emerge at dusk, travel up to a mile or two in a night, and need three things above all: safe routes, clean water and somewhere to sleep. None of those require much money or space, but they do require a little thought.

Build a hedgehog highway

Fences are the biggest barrier. A hedgehog cannot climb, and a solid gravel board or concrete panel at ground level turns a garden into a prison cell. The fix is delightfully simple — a gap roughly 13 centimetres square, cut at the base of a fence or dug beneath a gate, gives them all the room they need while keeping pets in.

• Cut one gap per boundary, ideally in a corner where cover is close by.
• Talk to neighbours — a linked row of gardens becomes a proper commuting route.
• Use a piece of drainpipe or line the tunnel with bricks if the soil is loose.
• Keep the gap clear of leaves and debris so it does not quietly disappear.

Where a fence is being replaced anyway, hedge is better. Beech, hawthorn, blackthorn and holly give cover, nesting material and insect food, and they let hedgehogs through without any DIY at all.

Water: the simplest gift you can give

A hedgehog can walk a long way in a night and gets thirsty. A shallow dish of fresh water, placed on the ground and refilled daily, is arguably the single most valuable thing you can put out. Use a saucer or a plant-pot base no more than two or three centimetres deep, and add a few pebbles so a small animal can climb out if it slips.

If you feed as well, keep it plain and meaty. Tinned cat or dog food in jelly or gravy, or dry kitten biscuits, are ideal. Never put out bread and milk — the old tradition is genuinely harmful, causing diarrhoea and dehydration. Avoid fish-flavoured food, which hedgehogs seldom take to. A handful at dusk, removed by morning, discourages rats and foxes from making a habit of it.

Shelter for sleeping and hibernating

By day a hedgehog needs somewhere dark, dry and quiet. Autumn and winter raise the stakes, because hibernation demands a stable, insulated nest. Log piles, brash heaps and corners left deliberately untidy do the job beautifully.

• Leave a stack of logs, twigs and leaves in a quiet corner over winter rather than tidying it away.
• Place a purpose-built hedgehog house in shade, entrance facing away from the prevailing wind.
• Line it lightly with dry leaves — never hay, which goes damp and mouldy.
• Site it against a wall or fence base, ideally near a gap in the boundary.

Be cautious with compost heaps. They are popular nesting sites, and turning one in winter can disturb a hibernating hedgehog or worse, bury it. Fork gently, and only in warm weather.

Remove the quiet dangers

Most garden hazards for hedgehogs are things we introduce without thinking. Slug pellets are the worst of them: poisoned slugs are eaten, and the hedgehog suffers the consequences. Deter slugs with beer traps, barriers and night patrols instead.

• Check long grass with a strimmer before cutting — hedgehogs often nestle in it.
• Turn netting up, or take it down at night; hedgehogs become badly tangled.
• Ponds need a gently sloping edge or a ramp so animals can climb out.
• Before lighting a bonfire, move the whole pile to fresh ground and check underneath.
• Cover drains, light wells and steep-sided holes with a grille or board.

Watching without disturbing

Half the pleasure is noticing they have arrived. Droppings that look like small dark sausages, snuffling noises in the border at dusk, and neatly disturbed leaf litter are all good signs. A cheap trail camera aimed at the food dish will tell you exactly who is visiting, and how often.

One rule matters more than any other: a hedgehog out in daylight, especially in winter, is usually in trouble. So is any animal found in late autumn weighing under about 600 grams. Handle it as little as possible, keep it warm in a ventilated box with a hot water bottle wrapped in a towel, offer water and meaty food, and ring your nearest hedgehog rescue straight away. Otherwise, leave them be, keep the water topped up, and let the garden go a little wilder. They will do the rest.