ABSTRACTIn La Montaña, Guerrero, one of the poorest regions in Mexico, the indigenous Non-Government Organization Xuajin Me´Phaa produces hibiscus and other organic products. The sustainability of hibiscus production was evaluated by comparing organic and conventional systems. The organic system showed lower yields, higher levels of soil organic matter and erosion control, and a higher benefit:cost ratio due to premium prices. A social capital index was constructed considering aspects of community organization, its level being higher amongst organic farmers. The relationship between agroecological projects and social capital is discussed under a context of severe environmental and socioeconomic vulnerability.