I think it would be mostly the Z7 & 8a area, east of OK and TX, which would include TN, NC, AR, and the northern parts of MS, AL, GA, and SC. There may be an actual description somewhere by the creator of the forums. Since this forum is so slow compared to the potential area covered by the name "mid-south," most people must not consider themselves in that area. It's not a term I hear often.
