Is this growing wild? If so I would guess that it is Malva moschata. BONAP doesn't show any record of M. alcea growing wild in Virginia. They both look so much alike, I don't think you can tell the difference from the bloom. You'll have to look a lot closer to the details.
Here is a key to help distinguish them. Scroll down to # 3 on the list.
http://www.efloras.org/florata...