Spot queen wasps early: spring tips to prevent wasp nests

Written by Avon Pest ControlFirst published 31 May 2024Updated 9 November 2026

The first wasps of the year are queens, and spring is the one point in the season when a single wasp is all there is to deal with. Spotting them early, and making your home a less attractive place to nest, saves a lot of trouble in August.

The short version

• A big, slow wasp in early spring is a queen fresh from hibernation, looking for a nest site.
• New nests start in lofts, sheds, eaves and wall cavities, and are no bigger than a golf ball.
• Sealing gaps and checking outbuildings regularly in spring is the most effective prevention.

Understanding wasp behaviour in early spring

Queen wasps spend the winter hibernating in sheltered places. When the weather warms, from March in a mild spring, they wake, feed on nectar and sap, and set out to find somewhere to start a colony. Each queen builds a new nest on her own. If you would like to know more about how a nest develops from there, see our guide to emerging queen wasps and early nests.

Spotting the signs: queen wasp emergence

• A larger than usual wasp. Queens are noticeably bigger than the workers you see later in summer. In spring they often fly slowly along walls, eaves and fences, or around sheds, inspecting gaps.
• A wasp returning to one spot. Once a queen has chosen a site she flies in and out of the same gap repeatedly.
• Wasps scraping wood. Queens collect fibre for building from fence posts, sheds and garden furniture. You can sometimes hear the scraping, and see pale scratch marks on weathered timber.

New nests: what to look for

Early nests are greyish-brown, papery and roughly the size of a walnut or golf ball, with a single entrance hole underneath. Look in:

• Lofts, particularly near the eaves and around light coming through the tiles
• Sheds, garages, summerhouses and greenhouses
• Under soffits, roof tiles and decking
• Bird boxes, hedges and dense shrubs

The risk of wasp nests

Wasps do useful work in the garden, hunting caterpillars, aphids and other insects to feed their young, and a nest well away from the house can often be left alone. The problem is a nest close to where people live, work or play, because wasps defend the nest and will sting to do it.

For most people a sting is painful but passes. For anyone allergic it can cause anaphylaxis, with swelling of the throat, difficulty breathing and feeling faint. Call 999 straight away if that happens.

Bee stings vs wasp stings

• Honeybees have a barbed sting that stays in the skin, and the bee dies after stinging. Scrape the sting out sideways with a fingernail or bank card as soon as you can.
• Bumblebees and solitary bees can sting more than once, but rarely do unless they are handled or their nest is disturbed.
• Wasps have a smooth sting and can sting repeatedly. They are more defensive near the nest and, late in the summer, more of a nuisance around food and drink.

The NHS guidance on insect bites and stings covers treatment and when to get medical help.

How to prevent wasp nests

• Check outbuildings and the loft every few weeks from March to May, so a nest is found while it is small.
• Seal the gaps you can reach safely, around soffits, fascias, pipe entries and shed doors. Fit mesh over air bricks rather than blocking them.
• Keep food and rubbish covered. Bins with tight lids and covered food outdoors make a property less attractive through the summer.
• Do not block a nest entrance once a nest is active. The wasps may chew another way out, sometimes into the house.

When to call us

If you have found a nest close to the house, or keep seeing wasps going in and out of the same gap, call us. A nest dealt with in spring is small and quick to treat, and we will point out where it was so you know where to check next year.

Wasp nest treatment → How a wasp nest starts →