Purpose. It is theoretically possible to substantiate and practically determine the degree of growth and development of stevia plants and their productivity depending on the use of the Avatar-2 microfertilizer. Methods. Laboratory, field, analytical, statistical. Results. During the years of research, the highest productivity of stevia agrophytocenoses was obtained in the variant with soaking (pre-sowing) of seeds in microfertilizer Avatar-2 + twice foliar fertilization. Plant density before harvest was by 10.5 thousand/ha, yield of green mass by 3.3 t/ha and including leaves by 2.5 t/ha, dry matter yield by 0.7% (including leaves by 0.3%) higher than in the control. Conclusions. The main effect of soaking seeds in the trace element formulation Avatar-2 (registered in Ukraine in 2006) in the technology of growing stevia is to increase the efficiency and uniformity of seed germination in both laboratory and field conditions, which promotes more intensive growth and development of plants during the vegetation, and when applied in the end of vegetation, to better preserve them and increase the yield of green and dry matter.