This contains potato seed system data collected for a network analysis. It is from CONPAPA, a consortium of small potato producers in Tungurahua Ecuador. It documents the movement of potato seed, and potato product for several potato varieties. Information is from 48 farmers, and documents stakeholders involved in the seed system, and in the buying and selling of potatoes for food. Data are anonymized to protect the identities of the participants. In addition, the data documents the farmers’ main sources of information for integrated pest management. Data was collected in November 2015, but documents information from several planting seasons.