The last post about Green Roofs was a bit “off topic” inasmuch as it showed examples of commercial buildings with vegetated roofs. Here is an example from a recent Green Home tour I attended in Philadelphia, in the Manayunk section. This roof is on a townhouse development called Sheldon’s Crossing, with magnificent views from this rooftop terrace and garden. The soil is a bit deeper here, about 6″. As you can see from the photos, it supports a fine lawn, as well as shrubs. The grass is fescue and needs mowing only once a year, we were told.