The organic winegrowers' association was founded in 2001 by the French cult winegrower Nicolas Joly, owner of the Loire wine estate Château de la Roche-aux-Moines (Savennières). Members are wineries that have committed themselves to natural, environmentally friendly viticulture according to organic and/or biodynamic principles and have been certified as such for at least three years. The common basis is the Quality Charter, which was established by the founding members and the board such as Nicolas Joly, Anne-Claude Leflaive and Olivier Humbrecht. This largely corresponds to the rules customary in the production of Natural Wines. There are well over 200 member wineries from 18 countries, most of them in France. The wineries are classified with one to three green stars. There are regular meetings with seminars and tastings also in the context of events such as ProWein. See on the complex of topics under the comprehensive keyword Organic Viticulture.