Thumai Natural Farming Producer Group is a cluster of small-scale organic farmers in eastern Sri Lanka committed to growing affordable natural food and protecting the environment. They produce their own compost, liquid fertilizers, and biopesticides from locally available materials. Crops include dry zone vegetables, leafy greens, and legumes. Members also grow cassava, ginger, turmeric, pineapple, passion fruit, banana, papaya, guava, lemon, orange, soursop, mango, breadfruit, coconut, and moringa. ​Thumai Natural Farming Producer Group is verified under a local organic participatory guarantee system (PGS).