How to Tell If You Have an Active Wasp Nest on Your Saffron Walden Property

The signs of a wasp nest change through the season, from a lone queen in spring to a roaring colony in August, and knowing the calendar helps you spot a problem at the right time.

Late April and May: the queen

The year starts quietly. A queen, emerging from hibernation in late April depending on the weather, spends days inspecting cavities. You may see a large wasp walking in and out of a gap, or crawling over a shed roof. In May she settles and starts to build, laying eggs in a small cluster of cells. Signs at this stage are slight: one wasp, repeated visits and perhaps a few scrape marks on timber.

If you notice these, make a note of the place. It is the easiest time to deal with a nest, as it is small and there are very few wasps to worry about.

It helps to have a rough idea of the calendar, since the weather can move everything forward or back by a few weeks. A mild spring brings queens out early, and a hot early summer speeds up growth. A cold, wet spell slows it. So treat the months below as a guide, not a timetable, and look at what the wasps are doing rather than at the date.

The thing that stays constant is the sequence: single queen, first workers, growing colony, peak, decline. Knowing which stage you are in tells you what to expect next.

June: the first workers

In June the first workers hatch, and for the first time there is more than one wasp coming and going. The nest still looks modest from outside, but the traffic increases week by week. You may start to notice a faint hum, and wasps becoming more interested in food and drinks. The queen no longer leaves the nest.

• Two or three wasps visiting the same gap.
• A light hum in a quiet room.
• First wasps at the picnic table.

This is a good time to book, as the nest is established but still manageable.

A walk-round in late April and May is worth the effort. Look at the places queens like, such as the shed, the garage, the eaves and the loft hatch, and make a note of any wasp that seems to be living there. If you have had a nest in a particular place before, check that first. The aim is to catch the nest while it is the size of a golf ball, when it contains only a handful of wasps.

July: the colony grows

July sees rapid growth. The workforce expands, and the nest grows in layers. Traffic at the entrance becomes steady through the warm hours. Staining may begin on ceilings if the nest is inside the building. Wasps appear in the house more often, and the sting risk rises.

This is when many people first realise there is a problem, because the numbers have become obvious. If you have been keeping an eye out since spring, you will see that this fits a pattern. If you only notice in July, the nest will already be well advanced.

Keep in mind that a hot dry spell in July can bring the cycle forward, so a nest may reach its peak numbers earlier than the calendar suggests. Equally, a cool, wet June can hold things back, then a warm week brings a rush of activity. Judge by what you see, not what you expect.

August: the peak

August is the height of the colony. The nest can contain from 2,000 to 10,000 or more wasps, and activity is at its greatest. The workers are at their most numerous, and they are often irritable. Wasps are everywhere around food and drink, and sudden movements are likely to provoke a sting. Nests in roofs, walls and the ground are at their most visible.

At this stage, the signs are unmistakable: a constant stream, a loud hum, staining and flakes. If you are only now finding out, do not wait. Keep clear and arrange treatment.

By July, a household that has been alert since spring will have a clear picture, while one that has not will be starting to see the effects. Look for the signs we have described: steady traffic through a gap, a hum, stains, flakes and scrape marks. Combine two or three, and you can be confident.

If you cannot find the nest but wasps are numerous, watch the direction they fly from a safe place and note it. This is most useful to a technician when combined with the time of day.

September and October: decline

As autumn arrives, the colony declines. The queen stops laying workers, new queens leave to hibernate, and the old workers die off. Activity at the entrance drops, but the wasps that remain can be bad-tempered and attracted to sugar. The nest may still be active into October, and cold nights eventually end it.

An old nest is not reused, but the same site may attract a new queen the following spring. Do not disturb an old nest without advice, as stragglers may remain.

In the months after the season ends, it is a good time to deal with the causes. Seal gaps once you are certain the nest is no longer in use, trim back overgrown climbers near the eaves, and tidy the stores where wasps could settle. Next spring, begin your checks in late April, so that the cycle starts with you ahead of it.

Booking

At any point in the year, a live nest can be treated. Wasp Nest Removal Essex charges a fixed £90 only, with an additional nest on the same property at £35 only. Everything we do is fully insured, so one visit is guaranteed. Our technician covers Saffron Walden and nearby villages, with same-day service seven days a week for domestic and commercial customers.

Phone 01245 327274 or request a visit through the contact page.

Frequently asked questions

More wasp advice for Saffron Walden