Nursery management: Liverwort is the worst

When Debalina Saha, assistant professor with the Michigan State University Department of Horticulture, wanted to assess the primary weed issue in Michigan’s nurseries and greenhouses, she wasn’t too surprised to find that liverwort – there are somewhere between 6,000 and 9,000 species – was one of the top concerns. Luckily, growers don’t normally contend