In the present study, the in vitro antimicrobial activity of 21 extracts against nine microbial strains and their potential activity were qualitatively and quantitatively assessed by the presence or absence of inhibition zones and MIC values. According to the results given inTable 2, Table 3 and Table 4, the extracts of the investigated plant species showed in vitro antimicrobial activities against one or more bacterial strains and the yeast species tested. The antimicrobial activities of plant extracts are compared with standard antibiotics such as gentamycin and nystatin, which were used as positive controls. Results of the antimicrobial activity obtained using the disc diffusion assay is summarised in Table 2.