Medicinal plants from various botanical families were collected. Their essential oils were extracted from the leaves using water distillation. Three different concentrations of the essential oil were prepared (5, 10, 15 μl/Petri dish). The inhibitory efficacy of the essential oils against the Aspergillus parasiticus fungus was evaluated in the laboratory, and the results were statistically significant (P <0.05) in inhibiting fungal growth compared to the control. The percentage inhibition of colony diameter growth rates exhibited an inverse relationship with the applied doses of the respective essential oils. For Artemisia herba-alba Asso oil, the inhibition percentages were (77.47±0.01, 62.82±0.03, 51.1±0.04) % at concentrations of (15, 10, 5) μl/Petri dish, respectively. Similarly, for Rosmarinus officinalis oil, the inhibition percentages were (74.08±0.06, 61.44±0.04, 26.92±0.07) % at the corresponding concentrations. Hence, the essential oils can potentially be utilized as an effective alternative without side effects to combat this fungal disease in the near future.