Simple roof greenery in real life

Quick answer：

Roof greenery, also known as green roofs, refers to the practice of growing plants on roofs. It involves creating a self-sustaining ecosystem on the roof that can absorb rainwater, reduce urban heat island effects, and improve air quality. Simple roof greenery typically involves using lightweight, low-maintenance plants and systems that do not require complex infrastructure. This practice is gaining popularity in urban areas due to its environmental and aesthetic benefits.