Rough green snakes are in my experience one of the easiest snakes to keep in a "natural" set up.

I'd say set them up however you want.

But, aspen as the substrate, maybe some plants, some sticks for climbing... And a large water bowl.
That would do the trick.

I also think they need some form of UV lighting to keep them alive for a substantial amount of time? I can't remember.

They feed on crickets and grasshoppers.
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Mike
KingPin Reptiles Inc.
www.kingpinreptiles.com
^ Updated 10/29