Background & Objectives: Ecologic conditions affect production of effective pharmaceutical products. We evaluate the effect of ecologic conditions on antibacterial effects of herbal plants in Fars.   Materials & Methods: We collected eight plant species including Trachyspermum copticum, Withania somnifera, Laurus nobilis, Carum carvi, Thymus, Rosemary, Zataria multiflora, and Lavandula in Fas...