In this research, the impacts of CuS, H₂C₂O₄, and ZnCl2 on Teucrium Polium's (TPL) ability to adsorb methylene blue (MB) were inspected. The prepared adsorbents' surface characteristics were recognized. The maximum percentage of MB removed from solution (97.63%) and the highest surface area (264.360 m²/g) were obtained in the instance of TPL, which was treated with H₂C₂O₄ (S2). The empirical variables effects, parameters of the thermodynamics, isotherms, and dynamics for MB adsorption by S2 were investigated. This research demonstrated that the ideal mass of S2 is 0.035 g and that the nonlinear pseudo-1^st-order and Freundlich models were superior at describing the experimentally obtained data for this adsorption. The outcomes of thermodynamics demonstrate that the MB cations were exothermally and spontaneously adsorbed by S2 and that it can be easily reused. The high q_max obtained in this study (1055.88 mg/g) confirms that S2, as an inexpensive and eco-friendly adsorbent, will be an efficient adsorbent to eliminate MB from wastewater.