A workshop on best greenhouse practices for new and experienced growers will be held 8 a.m. to 3:30 p.m. March 20 at O’Donal’s Nursery and Garden Center in Gorham. The event is sponsored by University of Maine Cooperative Extension and the Maine Department of Agriculture, Conservation and Forestry. Presentation topics will include greenhouse heating and read more Learn about best greenhouse practices March 20 in Gorham