University of Maine Cooperative Extension is offering a program on home and small-scale greenhouses 9:30 a.m.–noon April 22 at the UMaine Extension Penobscot County office in Bangor. Greenhouses extend Maine’s growing season. The workshop includes technical specifications of a greenhouse and key control factors, including temperature, levels of light and shade, irrigation, fertilizer application, and read more UMaine Extension workshop to focus on extending growing season with greenhouses