Green roof: Why use potted plants when you can grow trees on a roof?
Sourced from The Business Standard
Although the terms 'green roof' and 'rooftop landscaping' sound similar, architects draw a difference. A green roof is where plants and even trees are planted on the rooftop on a bed of soil, thus giving it a landscape-like form, unlike a random layout of portable pots
Remember the Hanging Gardens of Babylon? It used to be one of the Seven Wonders of the ancient world. Gardens, that too in a desert, may seem like a far-fetched dream, but the Babylonians did it. For them, it was just a statement, but in our times, the lack of green is alarming, and reviving it should be a basic concern.
Dhaka, from a bird's eye view, is nearly all roofs. With a small portion of this mega city allotted to open spaces, trees, and shrubs in scattered chunks; the city is becoming more polluted every day. The lack of connection between the green lands is interrupting the flow of pollination and the diversity of bees, birds, and small animals.
However, room for green cannot be made simply by razing buildings and structures to the ground. What to do, then? Start gardening on the roof.
Rooftop gardening in the form of landscaping is already popular. However, there are different kinds of rooftop gardening. The focus today is on how to make a green roof.
Green roofing has come a long way from filling out every corner of the roof with potted plants. A disorganised rooftop kills the space to move around. Although it fulfils the 'green' function of rooftop landscaping, it is not aesthetically pleasing.