Living walls are sometimes referred to as green walls. They are typically used in urban gardens where vertical spaces are more plentiful than ground spaces. Living walls can be used in either indoor or outdoor applications. Typical living walls are 30 kg per square meter or 6 lbs per square foot.
Since today is Good Friday, I thought it would be an interesting parallel to showcase the living on a day where Christians (me) believe that Jesus was crucified and buried.