During the month of April wasps start to awaken from their winter hibernation. Since the colony dies off in the fall and winter months, including the existing queen you will only see the fertilized potential queens that have overwintered under loose bark, cracks and crevices or attics. They are easily recognized because they are slower, larger and brighter than the workers.
At this stage, young queens are searching for a place to build their nest. Once the ideal spot is found she will attend to the business of:
- Collecting cellulose from weathered and rotting wood using this material mixed with saliva to construct a small papery nest.
- Attending to this first brood between 18-20 days.
- Nest building, food collection, feeding the larvae and protecting the nest till this first generation of offspring can perform these duties.
Early spring is the optimum time to take pest control measures:
- The queen will continue to lay up to a 100 eggs day, as a result, nest will continue to grow daily.
- Spring wasps typically are not aggressive.
- The nest is small and unprotected while the queen builds her nest. But as the brood grows, workers will sting in order to defend their nest or if attacked.
- Wasps become increasingly aggressive in the fall.