Algeria, due to its Mediterranean climate and soil nature, has a flora rich in medicinal and aromatic plants. The main purpose of our study was to enhance the Rosmarinus officinalis taxon. This species is considered a species of economic, aromatic and medicinal interest, widely used by the local population especially in traditional medicine and gastronomy. The morphometric study of Rosmarinus officinalis L., allowed us to highlight the relationships that exist between the different parameters. From this approach, it appears that the correlation is negative for the station of “Thniat EL Ghnam” defined by a significant altitude 1774 m is an exposure to the east, the latter is the growth factor of the Rosmarinus officinalis L. except the Correlation: diameter/number of branches. for the station Anitar1274 m the correlation is negative despite the low altitudes that require the development of Rosmarinus officinalis L. This is probably due to anthropozoic action. Rosmarinus officinalis L. has very important economic “beekeeping”, ecological and pharmacological advantages that are why this species must be exploited in the right direction.