Japanese rooftop greenery in reality

Quick answer：

Rooftop greenery in Japan refers to the practice of planting vegetation on rooftops, which is becoming increasingly popular for its environmental benefits and aesthetic appeal. This practice helps reduce urban heat island effects, improve air quality, and provide additional green space in urban areas. It also offers insulation, reducing energy consumption for heating and cooling. Japanese rooftop gardens often feature a variety of plants, from small herbs to larger trees, and can range from simple gardens to elaborate landscapes.