Vervain
Verbena Officinalis/Feverweed
Also known as the Enchanter's Plant, vervain was known to be used by Celtic Druids who harvested it with only iron tools and only when there were neither sun nor moon in the sky and when Sirius was rising. Honey was then poured into the ground to replace the loss.
The tradition to revere vervain continued into Anglo-Saxon times and was included in many potions. Infusion is a sedative for nervous exhaustion, a detoxifier, and is used to treat urinary tract infections. Tincture encourages milk flow and stimulates uterine contractions during labor and menstruation. A vervain poultice is used for eczema and sores.
More spiritual uses for the plant were for protection, exorcism of spirits, healing, and peacefulness. Brushed or sprinkled across a divination area, it helps in seeing more clearly the individual's wyrd.