The world's biggest rooftop greenhouse, roughly the size of 3 football fields, opens in Montreal

At 163,800 square feet, Lufa Farms' new rooftop greenhouse in Montreal is the largest in the world, capable of harvesting 25,000 pounds of tomatoes and eggplants every week, year-round.

"Our mission has always been to grow food where people live and to grow it more sustainably," Lufa Farms, a grocery delivery service in Montreal, said in an Instagram post. The rooftop garden was completed on Aug. 26, and is almost the size of three football fields. It is on the top of a warehouse in the Saint-Laurent borough, and provides the space to grow enough food to feed 10,000 families, Time Out reports.

The vegetables are grown inside hydroponic containers lined with coconut coir, and there are no pesticides used — bees pollinate the plants and ladybugs provide pest control. Captured rainwater is used for irrigation, and there is also a composting system in place. This is Lufa Farms' fourth greenhouse in Montreal, and now the company is able to produce more than 100 varieties of vegetables. Catherine Garcia

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