Plains Garter Snake
Thamnophis radix
A grassland garter snake of the central Plains, typically showing a bright orange or yellow dorsal stripe on a dark body.
- Venomous?
- Non-venomous
- Adult length
- 0.5-1.0 m (1.6-3.3 ft)
- Range
- Central United States and south-central Canada
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Overview
The Plains Garter Snake is a common and widespread species of the North American prairie and grassland regions, ranging from south-central Canada through the central United States. It is well adapted to open grassy habitats, including farmland and prairie remnants.
It is one of many garter snake species and can be locally abundant, sometimes forming large overwintering aggregations in communal dens.
How to identify it
- Dark olive, brown, or gray background with a prominent orange or yellow-orange dorsal stripe
- Less distinct or absent lateral stripes compared to some other garter snakes
- Keeled scales
- Round pupils
- Distinguished from other garter snakes primarily by the brighter, often orange dorsal stripe and grassland range
Habitat & range
Common in prairies, grasslands, farmland, and open woodland edges across the central United States and south-central Canada, often near water sources.
Behavior, diet & reproduction
Diurnal and active forager, feeding on earthworms, amphibians, and small invertebrates. Often gathers in large numbers at communal overwintering dens. Bears live young.
Frequently asked questions
Is the Plains Garter Snake venomous?
No, it is non-venomous and harmless.
What makes it distinct from other garter snakes?
It typically shows a bright orange dorsal stripe and favors open prairie and grassland habitat.
Do they gather in groups?
Yes, they often overwinter communally in large numbers at shared den sites.
Plains Garter Snake guides
In-depth guides for identifying and understanding Plains Garter Snake.
