Organic farming is a holistic agricultural production management system to improve and develop agrosystem health, including biodiversity, biological cycles and soil biological activity. Strengthening social capital in the development of organic farming is very important because organic farming often involves farming communities working together to achieve common goals. The Mulyo 1 Farmers Group is indeed one of the farmer groups that has succeeded in implementing organic farming, but until now there are still problems in developing organic farming. There are concerns about organic farming activities in the Mulyo 1 Farmers Group because some farmers, especially the elderly, are currently unable to make organic fertilizer alone. This research aims to analyze how social capital plays out in the development of organic farming, especially in the Mulyo 1 Farmers Group. This research uses qualitative methods. There were 10 informants in this research. The technique for determining informants is purposive and snowball. The data type consists of primary and secondary data. The data collection techniques used in this research are observation, in-depth interviews and document analysis. The data analysis method used in this research is the Miles and Huberman interactive analysis model. The validity of the data in this research is triangulation of sources and methods. The results of the research show that (1) elements of social capital in the Mulyo 1 Farmers Group include, (a) trust which is maintained by honest behavior and openness, (b) the norms of the Mulyo 1 Farmers Group are maintaining harmony and tolerance which is demonstrated by mutual respect. with each other, and being fair, (c) the network in the Mulyo 1 Farmers Group is formed through cooperation and communication. The obstacles to the Mulyo 1 Farmers Group in developing organic farming are the old average age of the farmer group members and the lack of initiative of the farmer group members. Efforts to strengthen the social capital of the Mulyo 1 Farmers Group in developing organic farming are (a) strengthening the self-capacity of group members, (b) carrying out group coordination, (c) expanding interactions with external parties, (d) strengthening cooperation in making solid organic fertilizer.