The start-up "Under strawberries" intends to plant the city of Paris by installing crops on flat roofs thanks to a unique biotechnology.
Rows of flowers, fruits and vegetables rise vertically on scaffolding. On the roof of Galeries Lafayette, 18,000 plants, more than 150 species, form a farm of a new kind.
"These plants grow on a sheep and hemp wool membrane, with a little earth,
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