In the city of Rosario, the municipal government agencies are working on a green belt policy (Cinturón Verde) within the development of current agroecological policies. The Cinturón Verde is conceived as the coordination of the efforts to promote and facilitate the transition towards agroecological production by combining multiple aspects of public policy on the largest portion(s) of farmland within the municipal boundary. The greenbelt policy is aimed at achieving favorable living and working conditions to produce agroecological food, protecting farmland from gradual conversion for other uses such as residential and industrial. The Peri-Urban Green Belt Program combines the implementation of different municipal ordinances (i.e. the prohibition of glyphosate throughout the city and of agrochemicals in the first 100 meters of the urban limit, the protection of food-growing lands (800 hectares), the obligation to incorporate food-related industries within the areas of integration with industrial zones), and active collaboration with farmers reconverting back to agroecological farming. This collaboration includes accompaniment for the remediation of upper soils, the introduction of alternative water and energy technologies, the offering of training and expert advice on agroecological cultivation and marketing. The green belt policy shows that a municipal authority can go a long way by using multiple policy instruments in a territorially coordinated manner, linking up with other organizations, institutions and neighboring municipalities.