The article deals with the results of studying the seed productivity of Hyssopus officinalis L. in the conditions of Karshi. To study the yield of H.officinalis L. seeds, plants in the generative phase were selected and the number of inflorescences per plant, the number of flowers per inflorescence and the number of seed buds per ovary were determined. According to these data, the indicators of seed productivity were calculated: potential seed productivity (PSP), real seed productivity (RSP) and the percentage of full-value seeds (PS). According to the results in the third and fourth years of the growing season, productivity was high, the seed productivity ratio was 52.5%.