B.S.
In the Holly Springs area there is Bobby's Produce. He started as a road side stand, then moved to a permanent location with a produce trailer, and now has a store. But he is on Hwy 5 between Sixes Road and Toonigh Road next to the Lebanon Post office. If you need specific directions, please feel free to write and let me know where you are located and I can give you directions. Bobby is a super nice guy and has awesome prices on his produce.
Cagle Dairy also has a farmers market during the summer on Saturday and there is one in downtown Woodstock also. I have not been to either, and don't know that they are very big.
Welcome to GA!