On Saturday December 8 th , from 10 a.m. until noon, the Central MN Regional Sustainable Development Partnership , the Sustainable Farming Association of Minnesota , and Grampa G’s Farm in Pillager will host a public open house for a new Deep Winter Greenhouse. Greg Schweser is Director of Sustainable Agriculture and Food Systems for University of Minnesota Extension Regional Sustainable Development Partnerships. He explains deep winter greenhouses this way: “To get down to it, it’s a greenhouse