Description of the subject: In Benin, honey production is a means of biodiversity conservation and a significant potential source of cash income for the rural people. Objectives: The purpose of this study is to identify melliferous plants and the nutrients they provide to bees. Method: This study was carried out in the North-West zone of Benin, in the municipal forest of Cobly, in the forest reserve of the hills of Kouandé and in the hunting zone of the Pendjari Park (Tanguiéta). Data collections were conducted from April 2015 to March 2016 using monthly phenological and apiculture releve. Melliferous plants inventories were carried out in a 1 km radius observation area around each apiary made up of 10 Kenyan hives, all colonized by Apis mellifera adansonii on each of the three sites. Results: The total inventoried melliferous flora amounts to 174 species, of which 79 are in the apiary of Cobly, 86 in the apiary of Kouandé and 96 in the apiary of the hunting zone of the Pendjari (Tanguiéta). Leguminosae constitue the most rich family in melliferous species at the three sites. Conclusions: This work allowed to identify 13 species with a high melliferous value, of which Parkia biglobosa and Vitellaria paradoxa represent apiarian plants with high interest in beekeeping in the North-West zone of Benin.