Roof gardens

roof of a building that is partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane.

practice of growing crops in vertically stacked layers

planted area on the top covering of a building

thumb|Facade greening with various supporting climbing plants on climbing aids

A sod roof, or turf roof, is a traditional Scandinavian type of green roof covered with sod on top of several layers of birch bark on gently sloping wooden roof boards.