Social Wasps can't be bought. The way to get more in the garden is to create the right conditions, and here's how.
What does it look like?
Seven species of social wasp are common in British gardens, including the common wasp and the German wasp; British social wasps are typically yellow and reddish-brown or black. Worker wasps are about 15mm long, though smaller individuals occur; queens are larger, at 20 to 25mm.
Life cycle
A queen starts a nest alone in spring, initially about the size of a golf ball with a small number of cells. Worker wasps then take over building and foraging, and by late summer a nest can be larger than a football, holding 400 to 500 workers. Once a nest has passed its peak later in summer, the demand for the animal protein workers had been hunting for eases off, and wasps often turn to sugary food instead, which is why they show up around fruit and drinks at exactly the time of year they seem most unwelcome. Only young queens overwinter, leaving the nest to shelter elsewhere, such as in outbuildings or under loose bark; the rest of the colony, including the old queen, dies off at the end of the season.
How to encourage it
There's no plant or feature that draws social wasps in the way alyssum draws hoverflies: a queen finds her own nest site in spring, and the useful action for a gardener is leaving an established nest alone once it's there, provided it's safely away from the house.
What it helps control
Myths about social wasps
5 common claims about social wasps, checked: 2 busted1 disputed0 untested2 hold up
“Wasps have no real place in the garden and should be treated as pests, full stop.”
Worker wasps spend the earlier part of the season hunting caterpillars, aphids, flies and spiders to feed the larvae back at the nest, which is genuine pest control on a garden's behalf. Both a horticultural authority and an invertebrate conservation charity name them as beneficial predators for exactly this reason, not as an incidental side note.
Our read The reputation comes almost entirely from the late-summer picnic-raiding phase; the predatory phase earlier in the year gets far less attention because it happens out of sight, at the nest, rather than around people.
What to do: Let a nest sited away from doors, windows or seating get on with it over spring and early summer rather than treating every sighting as a call to remove it.
2 sources
- RHS: Wasps including hornetsWasps are beneficial in gardens, feeding their grubs on caterpillars and other insects and so reducing plant damage, and should where possible be treated as the predators and pollinators they are.
- Buglife: Common waspCommon wasps actively hunt and immobilise flies, aphids, caterpillars and spiders to feed their larvae, making them important for natural pest management despite their poor reputation.
“Wasps don't do any pollination work; that's a job for bees only.”
Adult wasps feed largely on nectar and sugar sources for their own energy, visiting flowers in the process, and two independent sources name them as pollinators alongside their predator role rather than dismissing that role. It is a smaller contribution than bees make and comes as a side effect of feeding rather than specialised flower-visiting, but it is real.
Our read Neither source quantifies how much pollination wasps actually do relative to bees, so treat this as "a genuine but secondary contributor," not evidence that wasps rival bees as pollinators.
What to do: Don't discount wasps entirely when thinking about which garden visitors help with pollination, but keep the emphasis on bees and hoverflies, which do more of that work.
2 sources
- RHS: Wasps including hornetsRecommends treating wasps as the predators and pollinators they are.
- Buglife: Common waspAdult common wasps predominately feed on nectar as well as sugar and carbohydrate sources, and the species is described as an important pollinator alongside its pest-control role.
“Any wasp nest found in the garden should be destroyed straight away, whatever else is going on around it.”
Location, not the mere presence of a nest, is what should decide it. A nest sited well away from doors, windows or seating is doing real pest control and is recommended to be left alone; the calculation changes for one built somewhere people regularly pass close by, where sting risk becomes the deciding factor instead.
Our read "Disputed" here reflects that the right call genuinely depends on the nest's location, not that the source itself is inconsistent: it recommends leaving nests alone specifically "where possible," which is a conditional, not a blanket rule either way.
What to do: Leave a nest that's away from the house and out of everyday foot traffic. For one close to a door, window or seating area, treat sting risk as the deciding factor and get it professionally assessed rather than attempting DIY removal.
1 source
- RHS: Wasps including hornetsWhere possible wasp nests should be left alone and wasps treated as the predators and pollinators they are; for anything sting-related, RHS points to NHS guidance rather than giving DIY removal instructions of its own.
“Wasps just get randomly aggressive and start pestering people in late summer for no particular reason.”
There is a specific, dated cause behind it rather than a personality change. Once a nest passes its peak later in summer, the demand for the animal protein workers had been hunting for falls away, and the same workers switch to foraging for sugary food instead, which is why they start turning up around fruit, drinks and picnics at exactly the time of year people notice them most.
What to do: Expect the shift from around late summer onward and manage it with covered food and drink outdoors rather than reading it as wasps becoming more hostile as a species trait.
2 sources
- RHS: Wasps including hornetsLater in the summer, once wasp nests have passed their peak, the demand for animal protein in the nest lessens and wasps often turn to seeking sugary substances instead.
- Buglife: Common waspBy late in the season nests reach maximum capacity with abundant adults but few remaining larvae, and attraction to sugary foods and drinks intensifies as workers forage for carbohydrates for themselves rather than protein for a dwindling brood.
“A wasp nest and its colony carry on from one year to the next, so an established nest just keeps growing.”
The colony does not persist. Workers, males and the old queen all die off by the end of the season, and only newly mated young queens survive winter, doing so away from the nest itself in shelter such as outbuildings or loose bark. A nest found the following spring is always a fresh start from one of those overwintered queens, not a returning colony, and an old nest is not reoccupied.
What to do: Don't budget for an old nest to keep expanding year on year, and don't bother blocking off a last year's nest site as prevention; a new queen chooses her own site each spring regardless.
2 sources
- RHS: Wasps including hornetsBy the end of the season the workers, males and the old queen die, only the young queens overwinter away from the nest, and nests die out completely by late summer or autumn without being reused.
- Buglife: Common waspA common wasp colony lasts only one year; new queens overwinter separately and start entirely fresh colonies the following spring.
Frequently asked questions
Can I buy social wasps?
Not usefully: social wasps released into a garden with nothing to hold them there simply leave. Creating the right habitat and food source is what actually keeps a population around; see "How to encourage it" above.
Could social wasps actually cause a problem in my garden?
Occasionally, depending on what you're growing: see the note near the bottom of this page.
How do I know if social wasps are actually helping?
Watch the pest population, not the predator count: fewer cabbage white caterpillars over a few weeks is the real sign, not how many social wasps you can spot on a given day.
When will I actually see social wasps in the garden?
It depends on the stage in their life cycle — see "Life cycle" above for when they're active and what to expect through the year.
The wasp everyone swats is a genuine brassica caterpillar predator.
Social wasps are widely disliked and routinely killed, yet RHS names them among the creatures that control cabbage caterpillars: worker wasps hunt caterpillars and other invertebrates to feed their larvae, chewing and partially digesting the prey before regurgitating it back at the nest. A gardener destroying a wasp nest near the veg patch may be removing their own caterpillar control.
A nest well away from the house is doing real pest control. One near living space is a different call: the sting risk there is real, and removing it is reasonable. The RHS doesn't go further than that, though: it gives no guidance on DIY versus professional removal, and points to NHS guidance for anything sting-related. Worth weighing against the calendar too: nests die out naturally by late summer or autumn, so a nest spotted late in the season may not need removing at all.
Social wasps are also a pest of ripe fruit, and it shows up at the same point in the season described above, once the colony has turned to sugary food. On tough-skinned fruit such as apple, they enlarge damage already started by something else, like a bird peck; on softer-skinned fruit such as grapes, plums and pears, wasps can start the damage themselves. Enclosing fruit trusses in muslin, nylon tights or another fine mesh reduces it.
Sources
2 sources, recorded with what each was used for
- RHS: For Cabbage White Caterpillars: Tolerate cabbage caterpillars where possible, since they are food for many other creatures including parasitoid and social wasps and birds.
- RHS: RHS's dedicated wasps and hornets page: identification (species count, size, colouring), life cycle (nest founding, worker takeover, overwintering queens, nests dying out by late summer or autumn), diet (worker wasps hunting for the larvae), the advice to leave nests alone where possible and its own pointer to NHS guidance on stings, and wasp damage to ripe fruit (enlarging existing damage on tough-skinned fruit like apple, and initiating it themselves on soft-skinned fruit like grapes, plums and pears), with muslin or fine-mesh bagging as a protection method.