Carrefour sells 'illegal' heritage produce in Black Supermarkets — the law changes

Under Europe's seed marketing rules, farmers can only legally sell varieties registered in the Official Catalogue of Authorized Species — a regime that, as Carrefour's campaign argued, leaves an estimated 97% of existing cereals, fruits and vegetables, roughly two million heritage varieties, effectively illegal. Carrefour, France's largest retailer of organic food, had spent years on anti-GMO and biodiversity positions, yet shoppers barely knew it.

With agency Marcel, Carrefour decided the only way to make the law visible was to break it. In September 2017 it staged an 'illegal dinner' alongside the French National Food Forum, then turned sections of its stores into Black Supermarkets: contraband-style fixtures, herbarium displays of 600 forbidden varieties, and the faces of growers who had been sued by the agrochemical lobby. Rare beans, shallots, squashes and artichokes went on sale in up to 38 stores in Brittany and Île-de-France, supplied through five-year contracts with the 'illegal' growers.

The campaign made the absurdity physical: shoppers could hold, buy and taste produce the law called contraband, and sign a Change.org petition at the same counter. Two films, wild postings near government and media offices, and manifestos in Le Figaro and Le Parisien amplified the act. Carrefour sold some 70 tonnes of 'illegal' produce; case reporting counts 300M+ media impressions, a 15% rise in store traffic and a 10% rise in produce sales.

In April 2018 the European Parliament voted to re-legalise farmers' seeds for organic agriculture. The campaign became one of the most decorated French works of its era — a D&AD Impact Black Pencil, 14 Cannes Lions in 2018, Cannes' 2019 Creative Effectiveness Grand Prix and New York Festivals' 2019 Best of Show — and the founding act of Carrefour's Act for Food programme.