A bacterium that lives in the soil causes bacterial wilt in potato plant. Potato seed tubers can support bacterial wilt. The potato wilt bacterium mostly lives in the roots and gets into the root system when farm tools or equipment or soil pests. The purpose of this study was to assess the effectiveness of plant essential oils (EOs) against potato bacterial wilt. The essentials were extracted from Pinus palustris, Ocimum basilicum, and Thymus vulgaris by steam distillation method. The morphology of the isolated bacterial pathogen from potato was examined by microscopic studies. The study investigated three different concentrations of three essential plant oils (Pine, thyme and basil) under in vitro and in vivo conditions as a result of their effects on Ralstonia solanacearum growth and their possibility use as potato seed pieces dressing for controlling bacterial wilt disease incidence. Among the three tested concentrations, pine oil (0.25%, 0.50%, and 1%) inhibited Ralstonia solanacearum's growth in vitro more effectively than thyme and basil oils. When compared to the infected, untreated control, the foliar fresh weight of treated plants and the infected, untreated control were the same, the in vivo experiment revealed that pine oil at the three concentrations significantly reduced disease incidence and severity in potato cultivars.