Verbena hastata (American vervain, Blue vervain or Swamp verbena) is a flowering plant in the vervain family, Verbenaceae. It is a herb with opposite, simple leaves which have double-serate margins, borne on stiffly erect, branching square stems. The flowers appear in summer and are purple. This is a common plant that occurs across North America. They are hardy and drought resistant. <br>See also :
* [[Vervain]]
* [[Bitters]]
==Special Precautions of Blue Vervain==
==Health Benefits and uses of Blue Vervain are==