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Greenhood: How a Rooftop Farm in Hougang is Securing Singapore’s Future

Writer's picture: Jansher SinghJansher Singh

In a country where over 90% of food is imported, farming feels like an abstract concept for most Singaporeans. But step onto the rooftop of an HDB parking lot in Hougang, and you’ll see how one farm is turning that abstract challenge into a tangible solution. Greenhood, led by former investment banker Gaurav Saraf, is reshaping the way we think about food production in one of the world’s most densely populated cities.

Using the revolutionary technology of aeroponics—where plants grow without soil and with minimal water—Greenhood is growing more than just greens. It’s building a sustainable, community-driven ecosystem that could be the key to feeding Singapore’s future.


Why Singapore Needs Farms Like Greenhood

Let’s talk facts: Singapore imports the vast majority of its food, leaving us vulnerable to global disruptions like climate change and supply chain breakdowns. To change that, the government has set an ambitious 30 by 30 goal—producing 30% of the country’s nutritional needs locally by 2030. It’s a bold vision for a land-scarce nation, but it’s also where urban farming comes in.

Enter Greenhood. By converting an underutilized HDB rooftop into a high-tech farm, they’re maximizing space, producing pesticide-free greens, and redefining what’s possible in a compact urban environment.


The Aeroponics Advantage

At the heart of Greenhood’s operation is aeroponics—a futuristic farming method that grows plants in air. Roots are misted with nutrient-rich water, using 90% less water than traditional farming and eliminating the need for soil or harmful pesticides. The results?

  • Fresher Greens: Aeroponics prevents root dehydration, giving you crunchier, longer-lasting produce.

  • Sustainability: With no soil and minimal water, the environmental footprint is tiny.

  • Maximized Space: Vertical setups mean more greens in less space—a win for Singapore’s land-scarce reality.

Greenhood’s offerings include rocket, lettuce, and kale, with shelf lives of up to three weeks—perfect for health-conscious millennials stocking their fridges.


From Banker to Rooftop Farmer

Greenhood’s story begins with Gaurav Saraf, a former investment banker at MUFG with a knack for solving problems. After years in the corporate world, Gaurav turned his attention to sustainability and food security. With his background in mechanical engineering, he designed Greenhood’s aeroponic systems himself, transforming his passion for farming into a full-fledged urban farm.

His hands-on approach shows in the details: the meticulously calibrated systems, the high yields, and the commitment to quality that has already earned Greenhood a loyal following.


Building a Community Around Farming

Greenhood isn’t just growing food—it’s growing a movement. Events like Christmas at the Farm invite families, children, and curious urbanites to experience sustainable farming firsthand. Picture kids wide-eyed as they learn how their salad greens are grown, parents snapping photos against a backdrop of lush greenery, and locals walking away with a deeper appreciation for where their food comes from.

This ethos is at the core of Greenhood’s identity. By turning a rooftop into a hub for education, awareness, and delicious produce, Greenhood is fostering a culture of sustainability in a way that feels personal and accessible.


The Challenges of Growing Up (Quite Literally)

Of course, being a pioneer isn’t easy. Urban farming faces real challenges:

  • Labor Shortages: Finding workers skilled in aeroponics and farming technology is a struggle.

  • Awareness Gaps: Many Singaporeans still see urban farms as novelties rather than necessary contributors to food security.

Greenhood is tackling these head-on, partnering with schools and institutions to educate the next generation and launching marketing efforts to spread the word about the benefits of locally grown, pesticide-free produce.


Why Rooftops are the Future of Farming

Greenhood’s rooftop location isn’t just about maximizing space—it’s a masterstroke of practicality and vision:

  • Lower Costs: Renting rooftops cuts operational expenses, making the farm more sustainable.

  • Visibility: A farm in the heart of Hougang draws attention, turning curious passersby into enthusiastic supporters.

  • Community Connection: Being nestled in an HDB estate allows Greenhood to integrate seamlessly into the lives of its neighbors.

It’s a model that could be replicated across Singapore, turning unused rooftops into green oases that support local food production.


Sustainability, From Seed to Shelf

Greenhood’s commitment to sustainability extends beyond its farming methods:

  • Eco-Friendly Packaging: Their packaging is made of 70% paper composite, reducing waste without compromising on freshness.

  • Minimal Carbon Footprint: By growing food locally, Greenhood slashes the environmental impact of long-distance imports.

Every step of their process is designed to support their vision of a greener, healthier Singapore.


A Greener Future, One Rooftop at a Time

Greenhood is more than an urban farm—it’s a vision of what’s possible when innovation meets sustainability. By combining cutting-edge aeroponics with a deep commitment to community, they’re showing Singapore that food security isn’t just a government goal; it’s something we can all be part of.

For young Singaporeans navigating a rapidly changing world, Greenhood offers a hopeful reminder: the future isn’t just something we wait for—it’s something we grow.

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