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The Largest Urban Rooftop Farm in the World is Now Bearing Fruit (and More) in Paris

The Largest Urban Rooftop Farm in the World is Now Bearing Fruit (and More) in Paris
Agripolis, an urban farming firm, is beginning to produce fruit and vegetables for businesses and citizens in Paris with the largest rooftop farm on earth.

Getting fresh produce into the heart of a major city used to be done by a fleet of rumbling, polluting trucks—now it's a matter of bringing it down from the roof.

The largest urban rooftop farm in the world uses vertical growing techniques to create fruits and vegetables right in the center of Paris without the use of pesticides, refrigerated trucks, chemical fertilizer, or even soil.

Nature Urbaine uses aeroponic techniques that are now supplying produce to local residents, including nearby hotels, catering halls, and more. For a price of 15 euro, residents can order a basket of produce online containing a large bouquet of mint or sage, a head of lettuce, various young sprouts, two bunches of radishes and one of chard, as well as a jar of jam or puree.

"The composition may change slightly depending on the harvest," Sophie Hardy, director of Nature Urbaine, tells French publication Agri City. Growing on 3.4 acres, about the size of two soccer pitches, atop the Paris Exhibition Center, they are also producing about 150 baskets of strawberries, as well as aubergines, tomatoes, and more.

Speaking to the Guardian, Pascal Hardy, a sustainable development consultant and member of Agripolis, an urban farming firm, called the Nature Urbaine project in Paris "a clean, productive and sustainable model of agriculture that can in time make a real contribution to the resilience—social, economic and also environmental—of the kind of big cities where most of humanity now lives."

Currently only a third of the total space on hall 6 of the expo center is utilized for Pascal's alien-looking garden, and when the project is finished, 20 staff will be able to harvest up to 2,200 lbs (1,000 kg) of perhaps 35 different kinds of fruits and vegetables every day.

In plastic towers honeycombed with little holes, small amounts of water carrying nutrients, bacteria, and minerals, aerate roots which hang in midair.

As strange as the pipes and towers out of which grow everything other than root vegetables might seem, Hardy says the science-fiction farming has major benefits over traditional agriculture.

"I don't know about you," he begins, "but I don't much like the fact that most of the fruit and vegetables we eat have been treated with something like 17 different pesticides, or that the intensive farming techniques that produced them are such huge generators of greenhouse gases."

"It uses less space. An ordinary intensive farm can grow nine salads per square meter of soil; I can grow 50 in a single tower. You can select crop varieties for their flavor, not their resistance to the transport and storage chain, and you can pick them when they're really at their best, and not before."

Agripolis

Agripolis is currently discussing projects in the U.S., the UK, and Germany, and they have finished several other rooftop farms in France including one on the roof of the Mercure hotel in 2016, which cultivates eggplant, zucchini, peppers, tomatoes and cherry tomatoes, salads, watercress, strawberries, nasturtiums and aromatics all directly serving the hotel restaurant.

Growing on the roof and selling on the floor can play a big part in the production of carbon-neutral food because, according to Agripolis, fruit and veg on average travel by refrigerated air and land transport between 2,400 and 4,800 kilometers from farm to market.

The global transportation force is the largest of humanity's carbon-emitting activities, and reducing the number of flights and truckloads of produce is a great place to start cutting the amount of CO2 entering the atmosphere.

For a culinary city like Paris, the Parisian mayor's proposal to install an additional 320 acres (130 ha) of rooftop and wall-mounted urban farming space could significantly reduce the number of trucks entering the city, easing traffic and reducing pollution.

With rooftop farming being embraced from Detroit to Shanghai, the future is looking up.

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