Hexane, ethyl acetate and methanol extracts of Onopordum espinae leaves were investigated for their antibacterial activities against Bacillus cereus, Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa and Salmonella enteritidis. The in vitro antibacterial activity of Onopordum espinae extracts was qualitatively assessed by the diameter of inhibition zones (IZ...