Snakes in the garden, part 3: garter and green snakes

Previous posts in this series:

Snakes in the garden, part 1: flowerbed snakelings

Snakes in the garden, part 2: the black snakes

Eastern garter snake
An eastern garter snake emerging from under fallen leaves in the garden

Eastern garter snakes (Thamnophis sirtalis sirtalis) and Rough green snakes (Opheodrys aestivus) are occasional visitors to our garden, although their preferred habitat is probably closer to the creek that runs through a conservation easement adjacent to our property.

Eastern garter snake (Thamnophis sirtalis sirtalis)

eastern garter snake
A garter snake that I photographed in Durham County.

The eastern garter snake has a huge range, from Massachusetts to Florida on the east coast, extending west to Minnesota and Canada north of the Great Lakes, south to Louisiana and east Texas on the Gulf of Mexico.  It is a member of the same subfamily, the Natricinae, that includes North American water snakes and European grass snakes.  Like many of their relatives, garter snakes can be grumpy when first caught, but although I have grabbed many garter snakes in my life, I have never actually been bitten.  I have been on the receiving end of their defensive musk secretions, which they enthusiastically smear all over the place as they thrash around. (Their larger relative, the northern water snake is another matter.  Those will bite.)

Smelly defenses notwithstanding, garter snakes usually settle down and become quite tame in captivity.  Generations of children, yours truly included, have kept them as pets.

Garters eat frogs, toads, salamanders, earthworms, small fish–just about anything they can subdue and cram into their mouth, actually.  Given their fondness for slimy, wet prey, I suspect that the occasional garters in the garden have strayed from the creek in search of a sunny basking spot.

garter snake with bulge from recent prey
A darker garter snake, also from Durham County. Note the bulge, perhaps an unfortunate frog, and the blue color visible where the skin is stretched.

Various other subspecies of Thamnophis sirtalis are found throughout North America from coast to coast, Canada to northern Mexico.  If you garden anywhere in the United States, apart from the desert southwest, there is probably a garter snake nearby.

Maritime garter snake
A maritime garter snake (Thamnophis sirtalis pallidulus), close relative of the eastern garter snake, that we spotted sunning itself among the sand dunes on Campobello Island, New Brunswick, Canada.

Rough Green Snake (Opheodrys aestivus)

Rough green snake
A beautiful rough green snake

Green snakes are long and thin and perfectly camouflaged for a life of climbing through the bushes in search of  insects and spiders.  We have only seen a couple in our garden, and those were crossing the driveway or a path where their bright green scales were a beacon rather than protective coloration.  I wonder if they might be more common than they seem, just hard to spot.  Supposedly, they prefer thick vegetation near water, and certainly they are common around a lake close to my workplace that I sometimes walk around at lunch time.  There too, I usually notice them only when they cross the path in front of me.

DSCN0921

When the children and I catch a green snake, it will thrash around in a panic for a few moments but then quickly calms down and climbs slowly from hand to hand or up our arms.  Sometimes, they will mock strike, but they never bite.

I hope that by avoiding pesticides and densely planting the garden with a mix of shrubs and perennials to attract a wide variety of insects, I am creating good habitat for these beautiful snakes.

green snake in bushes
A slightly out-of-focus green snake disappearing into the bushes. Even my camera’s autofocus couldn’t decide where the plants end and the snake begins.
Advertisements

One thought on “Snakes in the garden, part 3: garter and green snakes

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s