<p>Landfill leachate contains harmful compounds that, without efficient treatment, endanger the surrounding environment. The present work aims to study the possibility of reusing treated landfill leachates in agriculture. The landfill leachates (LFL) treatment was performed using integrated physico-chemical processes (coagulation, Fenton, and Zeolites adsorption). The effluents were then valorised in fertigation practice. Toxicity of the effluents were determined by phytotoxicity assay. Tomato, alfafa and sunflower seedlings were grown in pots. Control soil (C), raw leachate amended soil (R), fertilizer amended soil (C-F) and treated leachate mixed soil with two concentration T1 (100% treated leachate) and T2 (50% treated leachate + 50% drinking water) were used in this experiment to assess plant growth. The treatment with combined process reduced 97% of COD, 93% of N–NH₄⁺ and 90% of toxicity. Plants cultivated with treated LFL showed an increase in their germination. Leachate irrigation changed the physicochemical properties of soil. Results showed increases of electrical conductivity (EC) and total nitrogen (TKN). In addition, the results indicated an increase in plant growth of those cultivated in treated leachate mixed soil compared to the control soil<i>.</i> The study demonstrated that treated leachate can be used as an available fertilizer.</p>