Field Guide to Maryland's Snakes (Order Squamata)
Sub-order Serpentes, Family Colubridae
Northern Rough Greensnake
Opheodrys a. aestivus
Photo of Northern Rough Greensnake courtesy of Linh Phu
22 - 32 inches. Record - 45⅝ inches.
Close-up Photo of Northern Rough Greensnake
courtesy of Scott A. Smith
Photo of Northern Rough Greensnake courtesy of Tony Prochaska
An arboreal species, it is found in association with shrubs and vines in riparian areas, particularly in areas with sandy soils. They also occur in hardwood and mixed pine-hardwood forests, old fields, suburban lawns, coastal shrub thickets and the wrack zone of barrier islands. Found primarily on the coastal plain.
How to Find
A diurnal species, carefully look for them climbing in thick leafy woody vegetation along pond, river and lake shorelines. Gentle when handled and non-venomous.
Photo of Habitat for Northern Rough Greensnake
courtesy of Rebecca Chalmers
Distribution in Maryland
Primarily a Coastal Plain species but has been known to follow river valleys west of the Fall Line into Montgomery County.
- Discover Maryland's Herps
- Maryland Herp History
- Maryland Herp Checklist
- Survey Techniques, Collecting Ethics, Safety and the Law
- Problems with Buying Frogs and Tadpoles for Wild Release
- Technical Guide: A Key to the Reptiles and Amphibians of Maryland - 86.3 MB pdf file
- Maryland Amphibian and Reptile Atlas (MARA) Project
- Natural Heritage Program
- Wildlife & Heritage Home
"A Joint Project of the Natural History Society of Maryland, Inc. and the Maryland Department of Natural Resources"
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The Maryland Herpetology Field Guide is a cooperative effort of the MD Natural Heritage Program and the MD Biological Stream Survey within the Department of Natural Resources and their partners. We wish to thank all who contributed field records, text, and photographs, as well as support throughout its development.