What’s the Difference Between a Garden Snake and a Garter Snake?

If you have ever spotted a small, striped snake slithering through your backyard and wondered whether it was a garden snake or a garter snake, here is the answer that surprises most people: they are the same thing. “Garden snake” is simply the common nickname people use for garter snakes because they are so frequently found in gardens, yards, and other areas near human homes.

The confusion between these two names has been going on for generations, and it is one of the most frequently asked questions in the reptile world. Understanding that these names refer to the same animal is the first step, but there is actually a lot more to know about these fascinating and incredibly common snakes.

Why Two Names for the Same Snake?

The official common name is “garter snake,” which comes from the resemblance of their striped pattern to the garter straps that people once used to hold up their stockings. The longitudinal stripes running down the length of their body look similar to these thin bands, and the name stuck centuries ago.

The name “garden snake” emerged because garter snakes are the most common snake species that people encounter in their gardens and yards across North America. They thrive in suburban environments where there are plenty of insects, worms, and small amphibians to eat, along with garden debris and mulch to hide under. For many people, the backyard garden is where they first encounter these snakes, so the name makes intuitive sense.

Both names are widely used and understood, but if you are researching these snakes online or talking to a herpetologist, “garter snake” is the correct term. Their scientific genus name is Thamnophis, and there are about 35 different species of garter snakes found throughout North America.

How to Identify a Garter Snake

Garter snakes are easy to identify once you know what to look for. Most species have three longitudinal stripes running the length of their body: one down the center of the back and one on each side. These stripes can be yellow, green, blue, white, or orange depending on the species and region. Between the stripes, the body is usually dark green, brown, or black, often with a checkered pattern.

They are relatively small snakes, with most adults measuring between 18 and 26 inches long, though some species can reach up to 4 feet. Their bodies are slender with a distinct head that is slightly wider than their neck. They have round pupils (not slit pupils like venomous pit vipers) and a mild, inoffensive appearance.

One helpful identification feature is their behavior. Garter snakes are active during the day, move quickly when startled, and often flatten their bodies to appear wider when threatened. They may also release a musky, unpleasant smelling secretion from glands near their tail as a defense mechanism. This musk is harmless but certainly memorable.

Are Garter Snakes Dangerous?

Garter snakes are not dangerous to humans. They are technically mildly venomous, but their venom is so weak that it has virtually no effect on people. Their small teeth and rear fanged delivery system mean that even if a garter snake bites you (which is uncommon), the most you will experience is a slight sting similar to a paper cut and maybe mild swelling at the bite site.

In fact, garter snakes are beneficial to have around your property. They eat slugs, snails, insects, mice, and other garden pests, making them a natural form of pest control. Many gardeners welcome garter snakes because they help keep pest populations in check without any of the downsides of chemical pesticides.

The only real concern with garter snakes is for small pets and children. While garter snakes will not hurt a child, a scared child who grabs a garter snake might get a defensive bite and a dose of that unpleasant musk. Teaching children to observe snakes from a respectful distance is always a good idea.

Where Garter Snakes Live

Garter snakes have one of the widest ranges of any snake in North America. They are found from southern Canada all the way down to Central America, and from coast to coast across the United States. They thrive in a remarkable variety of habitats including forests, grasslands, wetlands, suburban yards, and even urban parks.

They prefer areas near water sources like ponds, streams, and wetlands because much of their prey (frogs, tadpoles, small fish, and earthworms) is found in or near water. This is why you often see them near garden hoses, birdbaths, or any area of your yard that stays moist. Understanding how big garter snakes get can help you appreciate these common backyard visitors.

In colder regions, garter snakes hibernate during winter in underground dens called hibernacula. These dens can contain dozens or even hundreds of snakes gathered together for warmth. In spring, they emerge in large numbers, which can startle homeowners who suddenly find their yard full of snakes. This mass emergence is completely normal and the snakes will disperse within a few days.

What Garter Snakes Eat

Garter snakes are opportunistic eaters with a surprisingly varied diet. Their primary food sources include earthworms, slugs, frogs, toads, tadpoles, small fish, and insects. Some larger garter snake species also eat small mice, bird eggs, and even other small snakes. For more details on their diet, check out our guide on what garter snakes eat.

Unlike many snake species that are strictly ambush predators, garter snakes actively hunt for their food. They use their keen sense of smell (through tongue flicking) and good eyesight to locate prey, and they can move surprisingly fast when chasing something. Watching a garter snake hunt earthworms in your garden is actually quite entertaining.

Can You Keep a Garter Snake as a Pet?

Garter snakes can make good pets, especially for beginners who are interested in snake keeping but not quite ready for a larger species. They are small, generally docile with regular handling, and have simple care requirements. Captive bred garter snakes are available from breeders and are much better pets than wild caught individuals.

If you find a garter snake in your yard, it is best to leave it where it is rather than capturing it as a pet. Wild caught snakes are stressed by captivity, may carry parasites, and are protected by collection laws in many areas. If you want a pet garter snake, buy one from a reputable breeder who can provide a healthy, captive bred animal that is accustomed to handling.