A bug hotel is not really a hotel. It is a sheltered stack of hollows, crevices and dry corners that insects can use to nest, rest or sit out the winter. The best ones are built from things you already have lying about: cracked terracotta pots, spent bamboo canes, timber offcuts, dry leaves. No special tools, no trip to the garden centre, and an afternoon is plenty.
What a bug hotel actually does
Different creatures want different things, and that is the whole point of building several chambers rather than one box. Solitary bees — the mason and leafcutter types you may already see working your apple blossom — nest in hollow tubes, each female filling her own with pollen and eggs. Ladybirds and lacewings look for dry, tucked-away crevices to overwinter in. Beetles, centipedes and woodlice prefer damp, rotting wood, bark and leaf litter, and will happily move into a pile of offcuts at ground level.
Be realistic about what it achieves. A bug hotel will not replace a hedgerow or a wildflower verge, and it is not a cure for a tidy, spray-heavy garden. What it does very well is add a dense pocket of shelter to a spot that had none, right where you can watch it.
What to gather
Have a rummage before you buy anything. Most of this is already in the shed or at the back of a border.
- Four to six old plant pots, any size. Cracked and stained is fine; drainage holes are not a problem.
- Bamboo canes, cut into short lengths, plus a few cardboard tubes from kitchen roll if you want extra bee tubes.
- Untreated timber offcuts, ideally a mix of sizes. Avoid pressure-treated wood, which carries preservatives you do not want in a wildlife feature.
- Dry leaves, straw, wood shavings and a little bark.
- A couple of old bricks or flat stones for the base and any gaps.
- Broken crocks from repotting, plus a slate, roof tile or spare plank for the top.
- Twine, garden wire or a few screws to hold the stack together.
Pick the spot before you build
Position decides how much use the hotel gets, so sort this out first. Solitary bees need warmth to become active, so a spot that catches morning sun and is sheltered from prevailing wind works best — a south-east or east-facing fence or wall is ideal. Too much punishing midday sun, especially on a dry south-facing wall, can cook the tubes.
Keep the stack out of the path of water running off a roof or gutter, and off ground that sits wet all winter. Lift the base 10–15cm clear of the soil on bricks or a couple of chunky offcuts. Finally, put it near flowers. A hotel beside a lavender bush or a patch of open-faced daisies is far more useful than one in a shaded corner where nothing blooms.
Building it, step by step
- Set the foundation. Clear the ground, level it, and lay two bricks or a pair of thick offcuts as a plinth. Check everything sits flat — a wobbling stack will shed its contents.
- Build the shell. Work upwards from the base, using pots, bricks and offcuts to create a rough cube roughly 40–60cm wide. Leave the middle and the gaps between pieces open; those become your chambers. Keep the finished height below your chest so you can see into the tubes without a ladder.
- Firm it up. Screw or wire the pieces together, or brace the whole thing against a fence or wall so it cannot shift. Never rely on balance alone.
- Make the bee bundle. Cut canes just past a node, so each length has one closed end and one open end. Cut them slightly shorter than the depth of the pot they will fill. Tie the bundle tightly in two places with twine, then slide it in with the open ends facing outwards and just slightly recessed inside the rim. That recess keeps rain off without blocking the entrance.
- Fill the remaining chambers. Pack leaf litter, straw and shavings into one section, stack bark and rough offcuts in another, and leave a brick with gaps between it and the next piece for crevice dwellers.
- Add a roof and clear the front. A slate, tile or plank laid at a slight angle will keep the worst of the rain out. Sweep away soil, dead leaves and cobwebs from the entrances; an overgrown front is the quickest way to lose your tenants.
Which material suits which guest
- Solitary bees: bamboo canes and cardboard tubes, 6–10mm across, in the sunniest chamber. Holes drilled into a block of untreated timber work too — drill 8–10mm wide and about 10cm deep, but never drill all the way through.
- Ladybirds: a loose bundle of dry leaves and wood shavings, tucked in and left alone.
- Lacewings: straw or dry grass in a small pot, or a roll of corrugated card stood on end.
- Beetles and woodlice: stacked offcuts, bark and damp leaves in the lowest chamber, close to the soil.
One practical note: if your tube bundle is pushed hard against a fence, the back ends are sealed and nothing can get in from either side. The open ends must face you.
Keeping it useful
Dry, sunny and undisturbed will always beat clever and complicated.
Resist the urge to tidy. Leave the hotel alone through autumn and winter, because that is exactly when it is earning its keep — and cutting back, clearing leaves or moving the stack can disturb or kill overwintering insects and bee larvae. Check it once in spring. If the canes look mouldy, black or blocked, bundle fresh ones and swap them out, keeping the old ones nearby for a week or so in case anything is still emerging.
If you find a bee nest, leave it be. Solitary bees do not defend a nest the way wasps or honeybees do, and they are harmless neighbours. And do not paint, varnish or spray the hotel, or treat the timber with anything. Were you to keep the stack damp and shaded it will attract slugs and mould rather than bees, so move it into better light if that happens.
Start small and let it weather
A single pot of bundled canes and a nearby pile of leaves is a legitimate bug hotel, and it is a better first attempt than an elaborate tower that never gets used. Build it roughly, put it in a sunny spot, and give it a season to settle. New wood darkens, the leaves break down, and creatures arrive without any help from you. Once you have watched a leafcutter bee back out of a cane with a piece of rose leaf in its jaws, you will find yourself saving every offcut for the next one.
Photo: Erik_Karits / Pixabay
