Matthew Wood, a practicing herbalist for almost forty years, lives on an herb farm thirty minutes west of downtown Minneapolis. He is a graduate of the University of Minnesota and holds a Master of Science degree in Herbal Medicine from the Scottish School of Herbal Medicine, accredited by the University of Wales. Wood is the author of four previous books and a registered herbalist, or professional member, of the American Herbalists Guild, the only self-regulating body of practicing herbalists in the United States. He is also a regular contributor to the Journal of the American Herbalists Guild.