What is the Blue Vervain Herb? Blue vervain (Verbena hastata) is known by many names: common verbena, Juno's tears, wild hyssop, enchanter's plant, herb of grace, herb of the cross, pigeon's grass, simpler's joy, swamp verbena, American blue vervain, and many more. It's important to know that American blue vervain (Verbena hastata) is not the same as European vervain (Verbena officinalis) or North American white vervain (Verbena urticifolia). They are all used in medicine, and many of their benefits are similar. However, there are also some differences, and the benefits we'll talk about below are unique to blue vervain. Blue Vervain Herb Benefits: ◉ Calms nerves and mood swings. ◉ Helps improve breastmilk production. ◉ Headache and pain relief. ◉ Supports detoxification. Buy it from the natural health food store in the USA - Alive Herbals.