How Quickly Can a Wasp Nest Grow?

In the UK, the wasp nesting cycle usually begins in spring. Queens that have survived the winter emerge as temperatures start to rise.

The queen searches for a suitable place to establish a new colony, which could include:

• lofts and roof spaces
•  sheds and garages
• wall cavities
• gaps beneath roof tiles
• trees and bushes
• sheltered areas around buildings
•   underground spaces, including abandoned animal burrows

Once she has chosen a location, the queen begins building a small nest. She creates the first cells using chewed wood fibres mixed with saliva. This produces the distinctive paper-like material found in many wasp nests.

At this stage, the queen does everything herself. She builds the nest, lays eggs and feeds the developing larvae. This limits how quickly the colony can initially expand.

How Big Is a Wasp Nest in Spring?

Early nests may only contain a limited number of cells while the queen raises her first workers.

That changes when those workers mature.

The first generation takes over jobs such as gathering food, feeding larvae and expanding the nest. The queen can then spend more of her time laying eggs.

More workers means more cells. Those cells produce additional workers, which can then contribute to further expansion.

How Quickly Does a Wasp Nest Grow During Summer?

Summer is usually the main period of colony expansion and when the nest reaches its largest size. Each new generation of workers increases the colony's ability to collect food and build the nest. A colony can therefore grow much faster during summer than during its early stages in spring.

This is one reason nests are often discovered later in the season.

A nest hidden inside a loft or wall cavity may have been present for months. It only becomes obvious once there are enough workers travelling regularly between the nest and surrounding area.

How Many Wasps Can Live in One Nest?

A mature social wasp colony can contain thousands of wasps.

But not every colony reaches the same size. Some nests may fail during their early development. Others have access to suitable shelter and plentiful food, allowing them to become well established.

A nest inside a cavity may be difficult to see from outside. Yet there could still be substantial activity behind the visible entrance point.

Don’t assume that a small opening means there is only a small nest behind it.

When Does a Wasp Nest Become Noticeable?

You may never see the nest itself.

Instead, one of the clearest signs is repeated wasp activity around the same location.

You might notice wasps regularly entering and leaving:

·         gaps beneath roof tiles

·         cracks around brickwork

·         vents or air bricks

·         holes around fascia boards

·         sheds or outbuildings

·         openings around windows

An occasional wasp entering a garden does not necessarily indicate a nearby nest. However, regular traffic to and from one particular point can suggest an established colony.

You may also hear activity if a nest is inside a loft, wall or another enclosed area.

Later in the season, new queens and males are produced. The new queens leave to mate and find somewhere sheltered to spend the winter.

As temperatures fall, the original queen, workers and males eventually die.

The nest is then abandoned.

Wasps do not normally return and restart the same nest the following year. However, a suitable location can attract a new queen in a future season.

So, if you have previously had nests in a loft or outbuilding, it is worth checking for gaps that could provide future nesting sites.

When Should You Arrange Wasp Nest Removal?

Professional wasp nest removal or treatment may be appropriate when an active nest is affecting how you use your home or garden.

This is particularly relevant when the nest is close to doors, windows, paths or other frequently used areas. Professional help may also be sensible when the nest is difficult to reach or located inside the building.

A pest controller can assess where the nest is located and determine the appropriate treatment.

You should avoid approaching or disturbing an active nest while trying to identify its size. Watching wasp activity from a safe distance can often provide enough information to identify the likely entrance.

Dealing With a Growing Wasp Nest

A wasp nest does not develop overnight. The colony may have been growing since spring, with its activity becoming more obvious as worker numbers increased.

If you notice wasps repeatedly travelling to the same part of your property, there could be an active nest nearby. Getting the problem assessed can also help establish where the nest is located and the most suitable way to treat it.