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New Jersey Endangered and Threatened Species Field Guide

Image of Rough green snake.Zoom+ Rough green snake. Photo courtesy of Keara Giannotti.

Rough green snake

Opheodrys aestivus

Species Group: Reptile

Conservation Status

State: Special Concern



As its name implies, the rough green snake is green, light green to be exact. And its underside is white, yellow, or pale green. It grows to a length of 20 to 45 inches. It is a very slender snake, hard to find amongst vegetation due to its coloration.

The rough green snake has keeled scales while the very similar looking smooth green snake (Opheodrys vernalis) has smooth scales.

Image of Range of the rough green snake in New Jersey.Zoom+ Range of the rough green snake in New Jersey.


The rough green snake occurs throughout the southeastern United States, from Texas and Kansas in the west to the eastern seaboard from Florida in the south to the southern half of New Jersey in the north. Rough green snakes are only found in the southern half of New Jersey; smooth green snakes can be found in the northern portion of the state.

This snake prefers dense vegetation (shrubs, vines, or trees) near water. It is an arboreal species, an excellent climber often found in vegetation overhanging water.


This species eats mostly insects (especially caterpillars, grasshoppers, and crickets) and spiders.


Rough green snakes are primarily active during the day and are usually active between the months of April to November in New Jersey.

This species rarely lives longer than 6 years in the wild. Males first breed when they are about 21 months old and females at 21-33 months of age. 5-6 eggs are laid during the summer and hatch in 5-12 weeks. The eggs are laid under objects in damp areas, in rotting logs, or tree hollows and this species may nest communally. Individuals nesting within a tree may return to that same tree each year to nest.


In 2016, the New Jersey Endangered and Nongame Advisory Committee recommended a Special Concern status for this species within the state, but no formal rule proposal has been filed to date. The Special Concern status is largely due to population declines and habitat loss. Reasons for the decline in their population are loss of habitat, illegal capture for the pet trade, road mortality, and direct killing. This species, like many snakes, has an undeserved bad reputation and they are often killed, which is illegal in New Jersey.


The Endangered and Nongame Species Program would like for individuals to report their sightings of rough green snakes. Record the date, time, location, and condition of the animal and submit the information by submitting a Sighting Report Form. The information will be entered into the state’s natural heritage program, commonly referred to as Biotics. Biologists map the sighting and the resulting maps “allow state, county, municipal, and private agencies to identify important wildlife habitats and protect them in a variety of ways. This information is used to regulate land-use within the state and assists in preserving endangered and threatened species habitat remaining in New Jersey.”

Text written by Mike Davenport in 2016.


  • NatureServe. 2015. NatureServe Explorer: An online encyclopedia of life. Version 7.1. NatureServe, Arlington, Virginia. Available (Accessed: August 6, 2015).
  • Schwartz, Vicki and D.M. Golden. 2002. Field Guide to Reptiles and Amphibians of New Jersey. New Jersey Division of Fish and Wildlife.
Scientific Classification

Kingdom: Animalia
    Phylum: Chordata
       Class: Reptilia
          Order: Squamata
             Family: Colubridae
                Genus: Opheodrys
                   Species: O. aestivus

Find Related Info: Reptiles, Special concern

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