TRUE YARROW, MILFOIL: Delicate, gray-green, feathery leaves and clusters of small white flowers on long stems. Quickly spreading by roots and seeds. Stimulant, tonic, diaphoretic, vulnerary and aromatic. Used for colds if taken at the onset of fever. Used in witchcraft for divination and spells, being called “the Devil’s plaything.” Also used for venereal and menstrual problems. Navajo Indians drink a tea of the plant or chew the stems before intercourse for its aphrodisiac properties. Stronger substitute for hops in beer brewing. Plant with caution; yarrow is a very hardy plant and spreads very rapidly.