The Analamanga Regional Branch of the National Platform for Women, Sustainable Development and Food Security (ARFDDSA) supports smallholder farmers in Antanetibe Mahazaza, Madagascar, to strengthen agrobiodiversity through women-led farmer-to-farmer learning, demonstration sites and practical support. Farms are small and intensively cultivated, with soil erosion, limited land and strong demand from nearby Antananarivo for short-cycle crops. The 20 households studied maintained 34 crop types, comprising 24 agricultural and 10 fruit crops represented by 80 varieties, as well as 13 livestock types, although natural vegetation was severely reduced. ARFDDSA trains women farmer leaders in agroforestry, nurseries, composting, organic fertilisation, biological pest control, crop rotation and soil-moisture management. The leaders train local groups. This approach has supported increased tree planting, wider use of leaf compost, reduced chemical inputs and adoption of biological pest control, while connecting farmers with markets.