Participatory Guarantee Systems (PGS) are locally-focused quality assurance systems. They certify producers based on active participation of stakeholders and are built on a foundation of trust, social networks and knowledge exchange. Certified Naturally Grown is a Participatory Guarantee System. PGS have existed for decades, but in recent years they have gained recognition for the valuable role they play in the organic movement by including small-scale farmers in organic guarantee systems. Learn more about PGS