Wasps build colonies inside nests made from wood pulp, commonly found in buildings' roof spaces, airbricks, wall cavities, garden sheds, tree holes, and soil banks. They emerge from hibernation in spring, with queens starting new colonies around Easter, depending on the weather.
Wasp lifecycle
After the queen establishes a nest, she lays 10 to 20 eggs, with most nests not becoming active. Worker wasps later take over nest enlargement and larva feeding from late May to June. By early autumn, nests can contain thousands of wasps. Fertilized queens leave to hibernate, while the rest of the colony dies off with the onset of cold weather.
Useful information:
- April / May - the queen emerges from hibernation as the temperatures begin to increase and she starts to build a nest. This initial nest is usually only the size of a golf ball, and soon after she begins to lay the first eggs
- June - the nest grows slowly, and the first adults emerge from the nest 4 to 6 weeks after the first eggs are laid
- July - the nest starts to grow more rapidly as the numbers in the nest increase. This tends to be when you will start to notice nests on your property as there are more wasps flying around
- August / September - this is the peak of the size and activity within the nest. At the peak of nest activity there can be up to 20,000 individuals in one nest, however the average is between 2,000 and 5,000. Nests within loft spaces can grow to be very large in size
- October / November / December - as the temperatures drop and food supply decreases, the nest starts to decline and once some heavy frosts have happened, the nest dies off completely.
Over the winter months, the nest is empty, and the nest cannot be re-used in subsequent years. So, if you find a large wasp nest in your loft in the winter or spring months, it is an old one.
Reasons for controlling wasps
Wasps can carry germs and attack when disturbed, posing a risk to hypersensitive individuals. Their aggressive behavior increases in late summer as they search for sweet substances.
Wasp control considerations
Consider if nest destruction is necessary. Wasps benefit gardens by pollinating and controlling pests. However, larger nests may require professional treatment. We offer a guaranteed service for active wasp nests in the city.
Use insecticides for smaller nests in late spring and early summer, following manufacturer instructions. Ensure the nest is on your property before booking a treatment.
Large wasps in mid-spring are likely young queens. We cannot treat these until there's an active nest, usually from late May / June.
Managing wasp attraction to light
Wasps are often drawn to artificial light. Reduce attraction by keeping windows shut, limiting visible light, and using net curtains.
Remember: Wasp stings can be dangerous. Seek professional advice if concerned.
