Urban sprawl brings about considerable changes in the peripheral areas of the city. Rich in many vegetation types, mangrove forests, and agricultural plots, Bang Krachao is one of the largest remaining green areas in the proximity of Bangkok. This area is currently under threat as Bangkok’s urban sprawl has not gone without effect in Bang Krachao: green areas are diminishing due to an increased developmental interest in the area together with a growing number of residents. This essay examines the role of the agricultural sector in persevering the remaining green spaces by employing a SWOT-analysis. Findings show that despite a number of weaknesses and threats, there are several important opportunities the sector can capitalize on. Corresponding initiatives are suggested that help to preserve the remaining green spaces and at the same time enhance Bang Krachao’s agriculture sector. Without new initiatives to reverse urban sprawl, it is likely that the ‘green lung of Bangkok’ will be filled with more concrete and asphalt.