Vervain was very popular in European folklore. People wore necklaces of the flowers as charms to cure headaches, prevent snake bites, and bring general good luck. Priests and Druids were said to use it during rites and incantations.
The plant was discovered on the Mount of Calvary, where it was used to dress the wounds of crucified Jesus Christ.
When medicines were in short supply during the Revolutionary War, doctors used vervain as an emetic and expectorant with favorable results.
Nearly 200 species in the genus Verbena are found in the New World. Many of these species have been hybridized and cultivated by New World inhabitants.