Wasp Nest in a Hedge or Bush – What Radlett Garden Owners Should Know
Look low rather than high. The base of a hedge hides nests among roots and soil, and the ordinary jobs of mowing and weeding put people closest to them.
Why the foot of a hedge is attractive
A hedge looks like a wall of leaves, but its base is a quite different environment. Roots, leaf litter and the shade of the canopy keep the ground dry and undisturbed. Old burrows made by small animals, and gaps between roots, offer ready-made hollows. A queen looking for a place to start a colony in spring can find all of this in a single spot. Because the nest is underground or among roots, the only visible sign is a hole with wasps entering and leaving. The soil and plant cover do the hiding, so the colony can grow undisturbed until midsummer.
Hedges planted along a bank or against a wall are especially suited, since the bank provides soft soil and the wall provides shelter. If your hedge is like this, give the lower part extra attention in spring.
How people end up stung at the base
The jobs that put you close to a ground-level nest are mundane ones: mowing along the edge of the lawn, strimming the strip beneath the hedge, weeding, raking leaves, planting, or reaching under the hedge for a ball. All of these involve vibration or movement close to the entrance, and the first anyone knows of the nest is when wasps rise out of the ground around their legs. For anyone in Radlett with a hedge along a lawn, the lower edge is the part to check before cutting. A mower going past an entrance at close range is one of the commonest ways for a colony to be provoked.
Children are particularly exposed. A child chasing a ball under a hedge, or crawling along a lawn edge, is at the same height as the entrance. Warn them well before the summer holidays, and make the hedge base a no-go area when you see wasps there.
Reading the ground
Walk slowly along the hedge line in spring, looking at the soil rather than the leaves.
- A hole about the width of a thumb or larger, with no spider web across it.
- Fine, fresh soil crumbs around the rim, as if something has been digging.
- Wasps flying low and straight into the hole, or emerging from it.
- Activity that is more obvious on warm afternoons.
- A bare patch of soil that was not there previously.
Do not poke the hole or shine a torch into it. Mark it with a cane placed a good distance away, and keep your distance.
Pay attention to the time of day. In the early morning, wasps are slower to start flying, so a hole may look unoccupied when it is not. Check again at midday, when the sun has warmed the ground, before you decide it is safe.
Dry weather makes holes easier to see, because wet soil can slump and hide the rim. After a long dry spell, a freshly worked hole stands out clearly against the baked surface, so it is a good time to check.
What not to try
Advice online suggests pouring liquids into the hole, covering it with a bucket or blocking it with a stone. These methods are unreliable and risky. Wasps tend to dig another way out, or become agitated and swarm, and you could be stung on the legs and ankles before you can retreat. Never fill in a hole while it is in use. Equally, do not cut the hedge above the nest on the grounds that the cutting is not near the hole. Vibration passes along roots and soil, and the colony may respond to it.
Do not use homemade traps near the entrance either. Sweet traps draw more wasps to the area and do nothing about the nest. They are best placed well away from where people sit, and they are no substitute for treating the colony.
Dealing with the strip in the meantime
Leave the strip untouched until the treatment is done. Skip that stretch when mowing, and set the line of the mower away from the hedge. If you need to pass along the hedge, use another route. Keep children and pets from running along the base, and take care when carrying a ladder or tools past it. Cover food and drink, and keep bins closed near the hedge. When the nest has been treated, the technician can tell you when it is sensible to resume work. After that, fill in any open hole with soil in the cold months, so it is not available to a new queen.
Use the time to plan what will happen after treatment, such as which section needs trimming and whether the hedge base should be cleared of leaf litter. A tidy base makes it easier to spot problems early next year.
If the hedge borders a path used by visitors or deliveries, think about whether a sign or a temporary barrier is sensible. A piece of tape strung between two canes, well back from the hole, is usually enough to steer people away.
Booking a ground-level treatment
Treatment costs a fixed £70 per nest, with an additional nest on the same property at £30 each. The price is settled with you by phone first, and there is no call-out fee added. A nest in a place needing special access equipment might cost more, which you will hear first, and nothing is done until you agree. Technicians are fully insured and qualified, and work seven days a week, with same-day service and evening and weekend appointments. The number to ring is 07852 111 437, and the online form and contact page work too. Describe where along the hedge you saw the hole, and mention if anyone is allergic to stings.
Take a photograph of the hedge line from a distance, with the cane in view, if you can do so safely. It helps to show the technician where the entrance is among the roots, particularly if the hedge is long.
Wasps on your property in Radlett?
Fixed price £70 per nest, no call-out charge, same-day service available.