Resumo. Sabia (Mimosa caesalpiniaefolia Benth.) has ecological characteristics and symbiotic associations with nitrogen fixing bacteria and arbuscular mycorrhizal fungi. These associations are used as biological tool that could be used as an able alternative to minimize chemical fertilizer use and benefit plant development at environments under nutritional deficit. The objective of this study was to evaluate the growth of Leguminosae Sabia (Mimosa caesalpiniaefolia Benth.) like response to rhizobia and arbuscular mycorrhizal fungi inoculation, to establish growth curves to height and stem based diameter, to determine the N and F contents in plants aerial parts and to evaluate plants survival at field. The strain used was BR3405, The arbuscular mycorrhizal fungi used was Glomus clarum and Gigaspora margarita. The Glomus clarum + Gigaspora margarita + BR3405 and Gigaspora margarita inoculation provided better values for the studied variables (height, diameter, N and P) , and this last one was the best choice to Sabia plantation. The plants showed 100 % survival, regardless the treatment ued. There was not significant statistical difference for N and F content in Sabia aerial part., Nevertheless, it was noticed a faster growth in plants with symbiont.