Maximum Yield USA July 2017 | Page 48

featur rooftop growing by Barbara H. Shaw With nearly half of all humans living in urban areas, and many cities beginning to amend their codes and regulations to allow the construction of roof gardens, people around the world are warming up to the idea of creating outdoor oases on their rooftops. in its infancy in many North American locales, rooftop growing is T a hough well-developed practice elsewhere. In India and Singapore, tiny, high-tech rooftop farms in the range of 50 square meters provide profitable jobs for housewives and retired workers. Roofs can be ideal for hydroponic growing, too. Some mini- farms are now so high-tech that one acre can produce 700 tons of produce using aeroponic methods. Each year, more rooftop growers advance to productive commercial-size operations like this. 46 feature