This July 2025 research brief by SPERI describes an action-research project in Po E commune, Vietnam, integrating native edible herbs into transitioning agroecological farms to replace cassava monocultures, restore biodiversity, and improve livelihoods. Using a social cluster approach, ethnobotanical research, nurseries, and pilot farms, it engaged farmers, tested local species, and fostered collaboration among communities, scientists, and authorities to support long-term agroecological transition.