Climate-Smart Agriculture (CSA) has been widely adopted to achieve food security and support climate change adaptation and mitigation. However, scaling up CSA remains challenging, particularly in developing countries. To scale up CSA, mapping its practices, building capacity, and establishing platforms to share knowledge, and raise awareness have been identified as priority actions. To empower smallholder farmers to be resilient to climate change and catch up with the rapid pace of technological advance in the northern mountainous region of Vietnam, the project adapts CSA concepts to small farmers by identifying and assessing current CSA practices with a citizen science approach (co-assessing and co-experimenting). 18 households participated in an experiment from October 2022 to December 2023 through integrating fruit trees with organic vegetable model in home gardens. Households provided seeds, micro-organism products, irrigation system, vermiculture and technical training to experiment organic fertilizers making, bio-treatment in pest and diseases. Also, the project collaborated with Northwest Development Centre (TABA) and Agritage Cooperative to promote market through tourism and connect market in Hanoi.