Achillea millefolium, commonly known as yarrow, is a flowering plant in the family Asteraceae and is native to Asia, Europe, and North America. Yarrow is known as a wound healer when applied topically and can help tone varicose veins. The herb can aid in the body’s recovery from colds and flu and is helpful for menstrual problems such as heavy bleeding. Yarrow contains anti-allergy properties and is beneficial for hay fever.