looks real from the other pics, see here: http://www.rherman.com/projects/completed/sf/index.html

The green area is a plant called Baby Tears or Angel's Tears (Soleirolia soleirolii - formerly known as Helxine soleirolii). It needs shade as it easily burns.

thanks. we have a modern summer house on the virginia coast and we are trying to find plants that can take the wind/salt water/cold winters. David

Try looking at the Sunset.com website. You can use their plant selection filter and specifically look for coast tolerant plants. Just be sure they are hardy enough to tolerate the eastern winter temps as Sunset is geared for the west coast.