I finally stopped at Shearl Produce and I'm very glad I did. It is located on US 23 just over the North Carolina border, on the way to the Smokies.
As you can see, they have a well-stocked selection of all sorts of produce. In the back, they have some refrigerators with Amish butter and some meats. As with most farm stands, they carry a mixture of local produce and items from farther away. The owners were very helpful; they explained that the local strawberry crop wasn't yet ready. I took home some very nice South Carolina strawberries and some dried beans. I will definitely be back and soon----I look forward to some local strawberries.