Ethnobotanical knowledge and conservation of Bombax costatumPellegr. and Vuillet: an overexploited savanna tree species

•Bombax costatummultiuse involved ten plant parts used for nine use categories.•The harvest of Bombax costatumplant parts for food uses varied cyclically.•Local population shared the same opinion on threat factors and conservation solutions.•Domestication and strengthening of conservation measures are suggested best sustainable management solutions.•Integrating local solutions for the sustainable management of Bombax costatumis essential.