Overwintering red wasps
One of the most common times homeowners and business owners encounter red paper wasps is during the fall and winter months. As temperatures drop in late summer and fall, mated female wasps begin searching for protected spaces to be used as overwintering sites where they can survive through the colder months.
These young queens test properties by swarming around the warmer sides of buildings, looking for small gaps, cracks, and crevices large enough to squeeze into. They're not looking to build nests or establish colonies during this time—they simply need temporary shelter from the approaching cold, wet weather. Common overwintering sites include:
- Cracks and crevices in building exteriors
- Wall voids and attic spaces
- Behind shutters and siding
- Gaps around windows and doors
- Hollow trees and protected outdoor structures
While in their overwintering state, red paper wasps become sluggish and are not typically aggressive. However, their presence can still be concerning for property owners. The good news is that overwintering is temporary. Once the first or second cold snap of the season arrives, wasps that didn't find adequate shelter will die off, and those that did will enter a hibernation-like state. In spring, surviving queens will emerge and fly away to establish new nests elsewhere. Red paper wasps do not reuse old nests, so they're unlikely to return to the same overwintering site year after year.
For businesses and facilities managers, understanding this seasonal behavior is important for planning pest management strategies. If you're experiencing issues with overwintering wasps, our team can help assess your property and recommend appropriate wasp control measures.