One of the endemic flora that has become an icon in the Bromo Tengger Semeru National Park (TNBTS) area is the Edelweiss Flower. The existence of tourism developments in the Bromo Tengger Semeru National Park (TNBTS) area makes the demand for Edelweiss flowers as souvenirs even more excellent. It affects the economic value of these commodities. It affects the population decline and threatens its availability for the Tengger indigenous people who use Edelweiss flowers as offerings that other components cannot replace. Since 2017, the Wonokitri Village community has collaborated with Bromo Tengger Semeru National Park (TNBTS) area to form the Hulun Hyang farmer group to conserve Edelweiss Flower ex-situ. The Hulun Hyang Farmer's Group has also obtained a breeding permit for Edelweiss Flowers from the Ministry of Environment and Forestry regarding wanawiyata widyakarya, which is realized through the development of the Edelweiss Park. It is essential to increase the capacity of managers in Edelweiss Park Development to ensure the sustainability of their activities. This development needs to be fostered endogenously through the active participation of each member of the Hulun Hyang Farmer Group to form a firmly rooted mechanism and responsive to existing local dynamics. In this case, the Asset Based Community Development (ABCD) approach is considered suitable to be applied as a methodology to map assets owned by the Hulun Hyang Farmer Group. ABCD accommodates seven mapped capitals: physical capital, financial capital, environmental capital, technological capital, human capital, social capital, and spiritual capital. This asset mapping is hoped that it can encourage members of the Hulun Hyang Farmer Group to find out detailed information on their capital, which can later be used as a basis for formulating programs to improve skills and collective understanding so that they can develop a sustainable Edelweiss Park agro-ecosystem independently