It is a known fact that flat land is becoming a rarity when looking to have flat yards for a home. As a result, more and more retaining walls are implemented to create the flat space a person may desire. All of us have seen the ugly "prison wall" look at most shopping centers. They create the flat space, but do nothing for the environment. Now is the time to kill two birds with one stone. Why not create an earth friendly wall that will create the flat space and allow plants to grow on it too? Mother Nature would benefit from this as well as everyone else.

The following are links to help you decide what material works for your project the best:

http://www.eltlivingwalls.com

http://www.evergreenwall.com

http://gsky.com/green-walls