Almost 90% of France’s wild arnica production comes from Markstein in the Vosges, one of the few places where it grows in France. At an altitude of 1,000 m, on nearly 120 hectares of land, 8 to 10 tons of plant and 500 kilos of flowers are harvested by hand each year in June, on a highly regulated day starting at dawn. This plant, with its recognized medicinal properties, is now protected like a treasure. No more than 55 pickers are authorized per season, and no more than 11 tons are harvested. All these constraints have made it possible to preserve this resource over the last ten years.