Green snakes are one of a small group of snakes that eat only insects. Small green snakes can be fed crickets, small grasshoppers and fly larvae.
When keeping green snakes as pets, most people feed them a diet that consists of mainly crickets. However, it is important that the snake's diet include a variety of insects. One should introduce insects such as moths, earthworms and even arachnids such as small spiders. Meal worms can be used as well but only sparingly since their tough outer skeleton could cause impaction. Wax worms are another option when considering soft feeder worms. However, one should not offer insects wider than the snake's body.