Dr. Hannah Mathers has over 30 years of experience and training in weed control in landscape and nursery crops, and is accomplished in herbicide chemistry, plant physiology and various horticultural crops.  For the past 8 years, Hannah has been employed as an Independent Researcher/ Expert and Owner of Mathers Environmental Science Services, LLC.  Before that she was a Professor at Ohio State University and the Ohio Nursery and Landscape State Extension Specialist.