decoction

Common tansy has a strong aroma, but it is mainly used for its insect repelling properties. Indigenous people would also use it as an analgesic, contraceptive, and tonic. In decoction or liquid manure, it can act as a natural insecticide. It can also be used to drive mosquitoes away. BEWARE: Common tansy contains highly toxic compounds for humans and other mammals if consumed at high doses. Must be used in small quantities and with extreme care. Package: 25 seeds. Low germination rate (60%), which is expected from wild plants.