How big does a wasp nest get?
By Wespenprofis.ch · Reviewed by:Fachbewilligung Schädlingsbekämpfung VFB-S · Updated: 3 July 2026
At a glance
A wasp nest starts out in spring the size of a golf ball with nothing but the queen, and grows steadily through the summer. By late summer it reaches its peak with several hundred to well over a thousand insects and a diameter of 30 cm or more — which is also the colony's most aggressive phase.
The annual cycle of a wasp colony
A wasp nest is built from scratch every year. Only the mated young queen survives the winter, hidden away and alone, while the rest of the previous year’s colony died off long before. In April or May she founds the primary nest in a suitable spot — at this stage no bigger than a golf ball, with just a few combs and the queen as its only occupant. Once the first workers hatch, they take over building the nest and foraging, while the queen devotes herself solely to laying eggs from then on.
Growth over the summer
From June to August the nest grows continuously: new comb tiers are added and the number of workers rises week by week. In late summer, usually between August and September, the colony reaches its maximum size with several hundred to well over a thousand insects and a nest diameter of 30 cm or more. This is also the most aggressive phase of the year: as soon as the colony no longer has a queen, or the nest can no longer feed it, the workers become “queenless” and react extremely irritably to any disturbance.
Worth knowing
In autumn the entire colony dies off except for the new young queens, which withdraw individually to overwinter. A nest that has completed this cycle is never recolonised the following year — it can be removed without any risk, more on this in our guide Removing an old or abandoned wasp nest. What a nest looks like depending on the species and growth phase is shown in our guide What does a wasp nest look like? For the essentials on how to proceed when you find an active nest, see Found a wasp nest — what to do.
Frequently asked questions
How many wasps live in a nest at peak season?
Depending on the species and the location, it can be anywhere from several hundred to well over a thousand insects. A single nest only reaches this size in late summer at the earliest, never as early as spring or early summer.
Does a nest keep growing in autumn?
No. In autumn the colony dies off apart from the new, already mated queens, nest growth stops and the nest is never used again afterwards.
Why is a large nest more dangerous than a small one?
The bigger the nest, the more insects there are to defend it. In late summer the colony is also at its most irritable, particularly once it has lost its queen and become "queenless".