University of Maine Cooperative Extension and the Maine Department of Agriculture, Conservation, and Forestry will offer two free webinars Thursday, May 21, in support of National Invasive Species Awareness Week. Invasive plant biologist Nancy Olmstead will teach “Invasive Plant Ecology and Identification” from 9–10 a.m. and “Invasive Plant Management” from noon–1 p.m. The classes are read more Learn to Identify, Manage Invasive Plants on May 21