Welcome to ATP! If you are looking for a regional forum, then Mid-South Gardening is probably the closest.
http://garden.org/forums/view/...
I think all members should subscibe to the site talk formum, where you will be kept informed about changes and new features the ATP when they happen. You can also ask site related question there.
http://garden.org/forums/view/...
The All Things Gardening Forum is a place where you can discuss anything related to gardening.
http://garden.org/forums/view/...