AntimicrobialHerbal Actions / By Karen Coe Antimicrobial herbs are destructive to or inhibit the growth of microorganisms, including bacteria, viruses, and fungi. These herbs are wonderful to use as salves or powders. Antimicrobial Herbs Horsetail – Equisetum arvenseSt John’s-Wort – Hypericum perforatum Share this:TwitterFacebookPinterestLinkedInPrint Like this:Like Loading...