Rough cinquefoil (Potentilla norvegica L.) in flower, June. Photo by Jennifer Cote University of Maine Cooperative Extension is offering a free weed identification walk at 7 p.m. Thursday, June 12, at Stutzman’s Farm, 891 Douty Hill Road, Sangerville. Common weeds that invade vegetable, fruit, and other cultivated crops will be the read more What’s That Weed? UMaine Extension Knows