Stevia Rebaudiana Bert. Is a sweetener herb with great medicinal Potential the present study is aimed to elucidate the effects of combined application of silicon-nanoparticles and gibberellic acid (GA₃) on S. Rebaudiana. The plants were applied various treatments viz. deionized water (Control), 50 ppm GA₃, 200 ppm Nano-200 (Aerosil), 200 ppm Nano-300 (Aerosil), GA_{3 +} Nano-200 (Aerosil) and GA_{3 +} Nano-300 (Aerosil). The application of both GA₃ and SINPs applied individually through foliage was found effective, though, the concomitant effect of the silicon-nanoparticles and GA₃ was much pronounced compared to their alone application. The data analyses revealed that combined treatment [GA_{3 +} Nano-300 (Aerosil)] has proved the optimum concentration for the studied plant. The applied silicon-nanoparticles together with GA₃-induced metabolic changes altogether significantly improved overall plant growth and biochemical attributes.