Fist Courtesy for opening introduction is as usual to Great Wikipedia. Thanks you.
A roof garden is a garden on the roof of a building. Besides the decorative benefit, roof plantings may provide food, temperature control, hydrological benefits, architectural enhancement, habitats or corridors for wildlife, recreational opportunities, and in large scale it may even have ecological benefits. The practice of cultivating food on the rooftop of buildings is sometimes referred to as Rooftop farming is usually done using green roof, hydroponics, aeroponics or air-dynaponics systems or container gardens.