The cashew orchards development and productivity faces several constraints, which include weeds. This study aims to assess the degree of infestation of weeds in cashew orchards by monitoring their density, richness and diversity in 108 cashew orchards in four regions of Côte d’Ivoire. In each plot of the 100 m² of each of the cashew orchards selected, weeds were identified and the individuals of herbaceous species were collected and counted whereas the trees and shrubs were counted without being up rooted. There were 295 weeds species belonging to 194 genera and 58 families of angiosperms. Regional data revealed 101 species and 50629 individuals in the Bounkani, 165 species and 70618 individuals in the Kabadougou, 156 species and 13597 individuals in the Gontougo and 164 species and 196257 individuals in Marahoué. A high negative relation was found between the orchards’ age and the weeds infestation level in the cashew orchards.