In modern horticultural production attention is paid to creating the best conditions for growth and development of plants in order to increase crop yielding. Such task is to be met by, among others, modern organic-mineral fertilizers. In the experiment the effect of Aminoplant, Goëmar BM 86 and Goëmar Goteo on the growth, development, crop yield and quality of some herbs from Lamiaceae family was estimated. The applied preparations did not significantly affect the height of plants and the number of shoots in tested plants (sweet basil and marjoram) except of peppermint. The content of essential oil in herb of marjoram and peppermint was lower in plants watered with the investigated fertilizers then in the control and in sweet basil it was clearly lower only in the herb of plants watered with the preparation Goëmar Goteo as compared with herb harvested from the control plots and plots watered with Aminoplant and Goëmar BM 86. The biggest amount of total polyphenoles was noted in the herb of sweet basil harvested from plots watered with Goëmar BM 86 preparation, the least from plots watered with Goëmar Goteo. The highest mean content of flavonoid compounds in the green parts of peppermint was characteristic for plants from the control plots.

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