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 (all published by North Atlantic 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.