All snakes grow differently, and depending on the species. My northwesterns only grew a couple inches. The sprout up on growth on their second year, though. I don't have any pictures at the moment, I'll get some when I get home.
Chantel
2.2.3 Thamnophis ordinoides Derpy Scales, Hades, Mama, Runt, Pumpkin, Azul, Spots (Rest in peace Snakey, Snap, Speckles, Silver, Ember and Angel.)