Garter Snakes Garter snakes, also known as garden or grass snakes, are very common in gardens and residential areas.
Garters eat insects, as well as frogs, worms and grubs.
They are attracted to warm objects. This gives them the heat they need for digestion and growth. There are two species of garter snakes in Minnesota. Both have three yellowish, vertical stripes along their body. However, they can be variable in color.