French farmers are beginning to cultivate tropical fruits, such as bananas and guavas, in greenhouses in the southern part of the country. Frédéric Morlot, a farmer from Les Arts Verts in the Pyrénées-Orientales, is among the pioneers, growing a variety of exotic fruits including mango ginger and rose apple. The biggest challenge is temperature control in the greenhouse. The plants have been discovered to produce an antifreeze-like substance that aids in protecting them from cold in winter. Morlot sells his produce to French restaurants, including some with star chefs, as a way to reduce the CO2 footprint of importing these fruits.