What temperature do wasps stop flying?

Paper wasps also build their nests with a papery pulp. They construct only one comb of cells without any protective envelope (figure 15, 16 and 17). These insects are sometimes known as umbrella wasps because of the shape of their nest. read more

Since wasps cannot fly in temperatures below 50 degrees, spraying is safer and more effective if the temperature is below that mark. Exceptions to Spraying Times Paper Wasps are the only type of wasps that should ever be sprayed during the daytime, but avoid standing under the wasp nest while you do it. read more