The cultivar 'Proa,' selected in Germany for highest medicinal activity, was included in the original garden. The leaves and flowers are hemostatic, expectorant, analgesic, carminative, diaphoretic, emmenagogic, anti inflammatory, antipyretic, antiseptic, and stomachic. This incredibly wide activity can be attributed to the presence of over 120 active compounds in yarrow, making it one of the most valuable herbs for the home medicine chest.
References:
Grieve, M. (Maud). A Modern Herbal; the Medicinal, Culinary, Cosmetic and Economic Properties, Cultivation and Folk-Lore of Herbs, Grasses, Fungi, Shrubs, & Trees with All Their Modern Scientific Uses. New York :Harcourt, Brace & company, 1931.