In 2018, we evaluated 12 herbicides on 17 herbaceous species at three MI nurseries. Eight of the 12 products ranged in registration dates from 2011 to unregistered in 2018. Three were previously untested herbicide tank mixes and only one was an older product. Two of the 17 species were previously untested for any herbicides, and the other 15 were previously untested with any of the 12 products we were evaluating. At least one new herbicide and up to five, for each species evaluated, was found. Come and learn how the labor-intensive weed control programs that have constrained growth in this industry sector are becoming things of the past.
Mathers Environmental Science Services, LLC
Hannah Mathers is currently an independent horticultural researcher in nursery and landscape. From 2000-2014 she was a Professor at Ohio State University, Columbus, Ohio. Hannah is the recipient of several awards including meritorious service, distinguished contributions, and promotion of diversity. She is a recognized national speaker and writer and is best known for her research in bio-rational, conventional, and alternative weed control in nursery crops and landscapes. She is also noted for her diagnostic expertise of herbicide damage including drift and woody plant cold stress physiology.