I meant to put this in the last post, but it might be better here, by itself:
17-A Feed and Seed
2026 North Main Street, Summerville
Dorchester Feed and Supply
10310 Highway 78, Summerville
Red Top Feed and Tackle Shop
3815 Highway 17, Charleston
My current preference is Red Top Feed, but that may change in the fall, depending om whether they have what I need.