When heavy rain lashes Bengaluru every monsoon, roads fill up, drains struggle, and thousands of trees and branches across the city come down.
But on one five-storey home, a 600-square-foot forest on the terrace keeps standing.
It is a dense rooftop ecosystem of over 100 varieties of fruits, vegetables and medicinal plants — coffee, vanilla, cherries, dragon fruit, drumstick trees, pepper vines and native greens, all rooted together in a layered, living network.
For mechanical engineer Venkataraman, the terrace has become proof of something he has been building for years: nature, when designed to work as a system, can hold its own.
Built to behave like a forest
Step into Venkataraman’s terrace and the city seems to disappear.
Butterflies move between flowering plants. Birds settle into thick foliage. The air feels cooler.
But beneath the visible green lies the real engineering.
Venkataraman says the terrace was never meant to function as separate potted plants. It was designed like a forest floor.
“The strength of a forest lies underground,” he explains. “Roots connect with one another. They support each other and create stability.”
That network became visible during the storms.
“Take the drumstick tree, for instance. Its roots had woven themselves around neighbouring plants, locking into a shared system. Instead of standing alone against strong winds, the plants held each other in place”, he explains.
It is the same principle that keeps natural forests resilient.
A terrace that works like infrastructure
The terrace grows food, and that is only one part of its function.
It produces close to two kilograms of coffee beans. Medicinal plants grow alongside vegetables. Pollinators have found a home here. Birds use it as a stopover.
More importantly, the terrace works like infrastructure.
Venkataraman believes rooftops across Bengaluru can do more than host water tanks and solar panels. They can cool homes, store rain, feed pollinators and bring biodiversity back into neighbourhoods. Photograph: (Image generated with AI)
Nearly 80 percent of the rainwater that falls on it is harvested, filtered and reused. Instead of rushing into stormwater drains, the water slows down, gets absorbed and stays within the system.
Venkataraman says the terrace lowers surrounding temperatures by three to four degrees Celsius and improves air quality by nearly 10 to 12 percent.
A tribute that grew into an experiment
The forest began with memory.
What started as a tribute to his mother slowly expanded into a living experiment in how unused urban spaces could serve both people and ecology.
At first, architects discouraged the idea. A rooftop forest, they warned, would be difficult to sustain and risky for the structure.
But Venkataraman approached it the way an engineer would, with load calculations, water management plans and practical improvisation.
Years later, the result is a terrace filled with green and a functioning ecosystem.
Venkataraman believes rooftops across Bengaluru can do more than host water tanks and solar panels. They can cool homes, store rain, feed pollinators and bring biodiversity back into neighbourhoods, all by borrowing the logic of a forest.
