Green roofs popping up in big cities

Environmentally friendly industry rapidly coming into its own

The Washington Nationals

Particularly in cities, the rise of roof-topping grasses, succulents and other vegetation is fueling a boom for landscape architects, growers, builders and consultants in the know. As the roofs bloom in size and number, cities are weighing new incentives to developers and owners to install the admittedly costly growing medium and plant life as a long-term investment that could benefit both businesses and surrounding communities. And with a strengthening infrastructure to support them, designers are branching out in new directions.

MSNBC