[header] How to identify garden snakes [title] Know what a garter snake (thamnophis spp. [step] ) looks like. Garter snakes are the most common type of snake in north america that is likely to be venture into your garden. 
They have a variety of color possibilities, including a mix of greens and sometimes reds, browns, blacks, oranges, greys and yellows. Garter snakes are often referred to as garden or gardener snakes; they tend to be the most commonly encountered garden snake and if you do have them, they're a useful insect eater.