Hello Gardeners, I’m Amanda McNulty with Clemson Extension and Making It Grow. Paper wasps which build open-celled upside-down, umbrella-shaped nests and bald-faced hornets (which are actually above ground versions of yellow jackets) and build large, football-shaped nests, have many similarities. Both chew vegetation or soft wood, mixed with saliva, to construct their nests. The adults feed on nectar and some insects. They act as beneficial insects for gardeners as they feed their young