Maybe a thread containing recommended breeders could help people that want more snakes or are looking at buying their first.
Kingsnake.com and Scott Feltzer's site are the only ones that I can think of.
Since they don't offer different species/subspecies at that 3rd link, I don't think many garter enthusiasts give them a lot of attention. At the risk of stealing Don's thunder, I'm feeling a bit guilty about not recognizing one of our own breeders who has helped many of us ID our snakes (Welcome to Don's Garter Snakes).
Not a problem!! Thanks for putting the link in here!!! (ya beat me to it..lol!!!) I hope to expand my collection this summer also....will be expanding over the years for sure!!
Glade Herbs from Florida usually has some Thamnophis. I don't know wheather they breed any of them or not as many of the ones on the site below are wild caught. I have bought from them and was very satisified with the health of their snakes. Glades Herp Inc.
I can recommend breeders for those who live in Europe (Or should there be a seperate thread for it?). I only recommend someone that I already bought a snake from. They don't have a website, since I don't know if I can add more information about them for now I only add there names:
Steven Bol (THE best breeder in the Netherlands for garter's in my opinion)
Sabine & Gijs ( they are on the forum here and their collection is still growing, but I can certainly recommend them )