Why Build a Bug Hotel?

British gardens are becoming ever more important for wildlife. As hedgerows disappear and wildflower meadows shrink, our back gardens, allotments and window boxes offer vital refuges. A bug hotel—sometimes called an insect hotel or wildlife stack—is one of the simplest and most rewarding ways to give nature a helping hand. It provides shelter for a surprising range of creatures, from solitary bees and ladybirds to beetles, lacewings and even the occasional hedgehog. By stacking logs, bricks, hollow stems and other natural materials, you create a dry, safe place for insects to overwinter, nest and hide from predators. Best of all, it costs very little and takes just an afternoon to build.

Choosing the Right Spot

Position is everything. Insects need warmth to stay active, so place your bug hotel in a sunny, sheltered spot that catches the morning sun and is protected from strong winds. A south- or west-facing wall, fence or shed is ideal. Avoid damp, shaded corners, low-lying frost pockets and areas that become waterlogged. Raise the hotel at least 30 centimetres off the ground to prevent rot and deter slugs—a couple of bricks or a sturdy wooden pallet works well. If you can, site it near flowering plants so solitary bees and hoverflies don’t have far to travel for nectar. Keep it away from bird feeders, as tits and other birds will happily pick off insects as they emerge.

Materials to Gather

You don’t need to buy anything special. Most of what you need is already in the garden or shed. Aim for a mix of textures and cavity sizes to suit different creatures.

• Logs and branches: Untreated wood is best. Drill holes of varying diameters (2–10mm) into the cut ends to create nesting tunnels for solitary bees.
• Bricks and stones: Old bricks, broken paving slabs and stones with gaps between them make cool, damp shelters for beetles, centipedes and woodlice.
• Hollow stems: Bamboo canes, elderberry twigs or teasel stems. Cut them into 10–15cm lengths and bundle them tightly.
• Bark and leaves: Loose bark, dry leaves and straw provide overwintering spots for ladybirds, lacewings and spiders.
• Wooden pallets or crates: These form the frame. Avoid treated timber, which can be toxic to insects.
• Terracotta pots and tiles: Broken pots or roof tiles can be used to create dry, dark crevices.

Never use plastic, painted wood or anything treated with preservatives. Natural, untreated materials are safest for wildlife.

Building Your Bug Hotel

Start with a sturdy base. A wooden pallet or a few bricks laid flat will keep the structure stable and off the damp ground. If you’re using pallets, stack two or three to create a frame, or build a simple box from untreated timber. The ideal size is around 60cm wide, 40cm deep and 90cm tall—big enough to offer varied microclimates but small enough to manage.

Now fill the frame in layers, packing each one tightly so materials don’t shift. Here’s a simple order that works well:

• Bottom layer: Large stones and bricks with gaps. This provides cool, humid shelter for amphibians and beetles.
• Middle layer: Logs with drilled holes, plus bundles of hollow stems. Point the holes slightly downwards so rain runs off.
• Top layer: Dry leaves, straw, bark and small twigs. This is the warmest, driest zone—perfect for ladybirds and lacewings.

You can also add a few terracotta pots filled with straw, or a bundle of bamboo canes tied with garden twine. Make sure the whole structure has a roof—a piece of slate, a wooden board or a layer of roof tiles will keep rain out. Leave the front open so insects can come and go, but angle the roof to overhang slightly.

What Wildlife to Expect

Within weeks, your bug hotel will start to attract residents. Solitary bees—including leafcutter and mason bees—will nest in the drilled holes and hollow stems. Ladybirds will cluster in the dry leaves and bark, often in large numbers over winter. Beetles such as ground beetles and rove beetles will shelter in the brick and stone layer. Lacewings, spiders and woodlice will find homes in the crevices. If your hotel is near the ground, you might even get a hedgehog using the bottom layer as a resting spot. Don’t be alarmed if you see a few slugs or snails—they are part of the ecosystem and provide food for birds and hedgehogs.

Maintaining Your Bug Hotel

A well-built bug hotel needs very little maintenance, but a yearly check in early spring is wise. Look for damp, mouldy materials and replace them with fresh dry leaves or straw. If hollow stems have been sealed with mud, leave them—solitary bee larvae are developing inside. You can clean out old, unused stems in late summer after the bees have emerged. Avoid moving or dismantling the hotel in winter, as insects will be hibernating. If the roof has shifted, secure it. With a little care, your bug hotel will last for years and become a thriving hub of garden wildlife.