Go visit individual orchards and talk with the growers, or if you can wait, there is usually an Apple Festival up in Ellijay the first two weekends in October. If you don't like apples try muscadines. Muscadines grow great here in the Athens area, and right now is a great time to plant muscadines. Countless varieties of muscadine grapes will do well in this area, so it pays to do a little taste testing. Check out the Farmers Market Bulletin for the times and locations for picking.
Raspberries are yet another fruit crop that can be productive in the fall.
The old standard Dormanred raspberry is productive in early summer. However, raspberry production in this area can be extended into the fall by planting an erect growing variety named Heritage. Nuts Pecans are still in the kernel-fill stage. Making sure that trees stay watered during kernel-fill will help prevent nut fall and enhance nut size and yield. Since the season for pecan harvesting is just around the corner you may want to collect and remove all broken limbs and debris from under your trees.