Unveiling the Buzz: Why Wasps Are Out in Full Force This Summer
As the summer days stretch out, the buzz around Edmonton is hard to ignore—literally. Wasps are making their presence felt, turning outdoor activities into a challenge. But what’s behind this increased wasp activity as we move into late summer? Let’s delve into the science and strategies for managing these pesky insects.
Late summer sees a notable uptick in wasp activity, and this year is no exception. The hot and dry weather across Edmonton has created ideal conditions for wasps to thrive. Graham Parsons, a Pollinator Biosecurity Specialist from Saskatchewan Agriculture, sheds light on why we see more of these insects at this time of year. According to Parsons, the surge in wasp numbers is largely due to their dwindling natural food sources.
“Wasps are primarily predators and also play a role as pollinators,” Parsons explains. “During the summer, they feed their larvae with protein sources from other insects, while adults forage for carbohydrates from flower nectar.” However, as summer progresses, both insect populations and flowering plants decline. This reduction means less nectar and fewer insects, pushing wasps to seek alternative food sources, including the ones humans provide.
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This shift leads wasps to become more interested in human activities, such as barbecues or even pet food left outdoors. To combat this invasion, Parsons offers practical advice for managing wasp problems. If you spot increased wasp activity, the first step is locating their nests. “A good strategy is to address the nest after dark,” Parsons suggests. “Wasps are less responsive to red light, so use a red flashlight and apply insecticide spray from a distance to eliminate the nest.”
If you’re dealing with nests that are hard to reach, another method involves covering the nest with a bag and removing it carefully. Decoy nests can sometimes help deter wasps, but their effectiveness diminishes as the season progresses and nests become more established.
Finding where wasps might be nesting is crucial. Parsons points out common locations for wasp nests, such as spaces between old buildings, under decks, or in hollow cavities. “Wasps prefer sheltered, dry spots, so checking these areas can help you locate their nests,” he advises. Sealing potential entry points with materials like spray foam or steel wool can prevent wasps from settling in.
While wasps can be a nuisance, they do play an important role in the ecosystem. They are effective predators of pest insects and contribute to the pollination of various plants, albeit less efficiently than bees. “Despite their reputation, wasps are beneficial for controlling pest populations,” Parsons notes. “However, if they pose a safety risk, don’t hesitate to remove a troublesome nest.”
So, as we navigate this wasp-heavy season, remember that these insects, while bothersome, are part of a larger ecological balance. Taking appropriate steps to manage them can help keep your outdoor spaces enjoyable without compromising their role in nature.
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