Paper wasps: the umbrella nest under your porch
Paper wasps are slender wasps with long legs that dangle when they fly. They build a single, open comb of gray paper hanging from a short stalk, so you can see the cells from below β it looks like an upside-down umbrella. Nests start the size of a quarter in spring and can reach several inches across by late summer.
They're less aggressive than yellow jackets and usually leave people alone. The trouble is where they build: right where people walk. A nest over the front door, in the corner of a porch ceiling, inside a mailbox or under a deck railing means someone is going to get close to it eventually, and paper wasps defend their nest when it's bumped or sprayed.
Madison has a lot of older houses β Victorians, colonials and other homes with deep porches, decorative trim, shutters and eaves β plus a busy downtown and a college campus. All that trim and overhang gives paper wasps exactly the sheltered, dry spots they look for.