On May 29, 2011, DWMike from Grenada, MS (Zone 8a) wrote:
These wasp are very aggressive here. There are usually 2-3 that fan the nest with their wings and if you get close, they do attack and sting. I have been attacked and stung by numerous Red wasp on a nest that I was unaware of just walking by at over 10 feet away and not just on one occasion either...these guys mean business. The sting is almost as painful as a hornet and makes a large area (the size of a baseball) around the sting site to be sore and tender for several days after the sting.
We have about half our birdhouses taken over by the red wasp. They don't seem to bother us unless we get to close. As long as we stay calm around them they just buzz us to warn us away.
They were all over our peach tree trunks this summer, I don't know if they were after the sap or not?