The total content of biologically active substances (flavonols, catechins, tannins, pectins, protopectins, carotenoids, saponins) in the above-ground organs of Agastache rugosa, A. foeniculum, A. urticifolia, A. mexicana was determined depending on the phenological phase of development under the conditions of introduction of the Botanical Garden Ural Branch of the Russian Academy of Sciences. The content of flavonols (3–6%), catechins (105–190 mg%) and protopectins (4–8%) in the leaves and inflorescences is comparable, the concentration of tannins (7–16%) by the period of mass flowering – the beginning of fruiting in the leaves in two times higher than in inflorescences, pectins (0.2–0.6%) - noticeably higher in inflorescences during the flowering period; in the total content of saponins (8–29%) significant differences were noted only for leaves (13%) and inflorescences (29%) A. mexicana during the period of mass budding – the beginning of flowering, there are significantly more carotenoids in the leaves (130–184 mg%) than in the inflorescences (14–18 mg%). The maximum values of the total content of phenolic antioxidants (PCA) are observed for leaves (up to 2.59 mg/g) during the period of mass flowering - the beginning of fruiting. The greatest contribution to the PCA of the studied plant species is made by catechins (r=0.69) and tannins (r=0.63). The total content of phenolic antioxidants during two growing seasons in the raw materials of the studied species of the genus Agastache did not differ significantly (p<0.05). Leaves are characterized by the highest SSA values; however, significant differences in SSA between leaves and inflorescences were established only for A. foeniculum. Plants are richest in the studied groups of biologically active substances during the flowering period.