Do Wasps Return to the Same Nest Every Year? A Guide for Two Tree Island Gardens

Under a deck or patio is a dry, shaded void, and an autumn look beneath the boards shows whether last year’s visitor left a shell.

The space beneath your feet

Decking sits above the ground on joists, and the dark gap beneath is dry, sheltered and rarely seen. The same is true of steps, raised patios and the space under a summerhouse. For a queen, this is a ready-made cavity, and the entrance can be as small as a gap between boards.

If wasps went in and out beneath your deck last summer, that colony is dead and the nest is not coming back to life. The point to understand is that the void itself remains, and every spring there will be a new queen looking for exactly this kind of place.

If you live in Two Tree Island and have a deck, take the winter to understand what is under it. It costs nothing, and you will be calmer next summer for having done so.

The area below the deck is not just a hiding place for wasps. It also collects leaves, seeds and rubbish, which attract rodents and insects, so a tidy underside is good practice anyway.

Taking a look underneath

Use a torch and look through the gaps between boards, or from the edge if there is a skirting panel. Do not crawl under unless you are certain it is safe, and never reach into the dark with bare hands. A nest sits as a pale grey ball, often attached to a joist or the underside of a board, and an old one will be dry and silent.

If there is a removable panel, take it off in cold weather and look in with a torch. Check the ground too, because a hole in the soil beneath the deck can be used as an entrance to an underground nest.

Photograph what you see. If the space is filled with debris, leaves or old pots, clear it with a rake while standing outside.

If your decking has hinged panels for access, check the hinges and latches before use, as they may be stiff after winter. Open slowly and look into the gap as you do so, with your hand clear of the opening. Never put a head or an arm under the decking in the warm months.

For a summerhouse or shed on a raised base, treat the base the same way, looking at the edges and the ground below for gaps and holes.

Closing the gaps sensibly

Decks need air to stay dry, so do not seal them solid. A fine mesh behind the skirting, with small enough openings to keep out insects, balances ventilation and protection. Gaps between board ends and the house wall, and spaces around posts, may need filling.

• Fit mesh or battens along open sides.
• Fill gaps around the base of steps.
• Keep soil and leaves cleared from the edges.
• Check again in spring to see whether anything has been disturbed.

Always do this when you know nothing is inside, and if in doubt, wait for a hard frost.

Hardwood and treated softwood both weather and shrink, so the width of a gap between boards will change over the years. Look at a board that was tightly fitted when new and may now allow a wasp through.

A handyman or deck specialist can advise on mesh and fixings that suit your structure.

Patios, paving and loose slabs

Paving slabs on sand can leave voids where soil has washed away. Ants dig there, and so do other creatures, and wasps sometimes take over abandoned holes. If a slab rocks when you step on it, there may be a cavity beneath.

In spring, watch for wasps entering a joint or disturbing the sand at a gap between paving stones. A steady procession is a sign of a nest, and you should keep off that part of the patio.

Resanding joints in autumn, once any activity has stopped, is a reasonable maintenance job. Pressure washers should be kept away from suspected nests at any time of year.

Garden furniture with hollow legs, parasol bases and upturned planters on the patio also deserve a glance. Tip them out in winter and store them in a dry place, so there is less for a queen to explore.

Pressure washing in spring is best left until you have checked underneath and around the edges, because spray can drive wasps out in unhelpful directions.

What an old nest tells you

A nest found beneath a deck in winter is a record of where a queen succeeded last time. It will eventually crumble, and you can remove loose fragments when you are certain nothing is alive. You can ask the technician at booking whether an empty nest can be taken down.

Do not leave scraps of food or drinks on the deck in summer, which attracts foragers and makes any nest more likely to be noticed.

If you rent and the deck belongs to the landlord, send photographs of any defects. Responsibility depends on your agreement, so check it and keep a copy of what you send.

If you hear buzzing under the boards

Stay off the deck, call children and pets inside and keep clear of the edges. Do not pour anything through the gaps. Contact Wasp Nest Removal Essex on 01245 327274 or use the online form on our contact page.

The fixed price is £90 per nest with one visit guaranteed, and an additional nest on the same property is £35 per nest. Wasp Nest Removal Essex is open seven days a week and offers same-day service to homes and businesses, fully insured.

Mention any allergy at booking so the visit can be prioritised.

Treatment is usually quick to arrange.

Frequently asked questions

More wasp advice for Two Tree Island