The Year-Round Solar Greenhouse: How to Design and Build a Net-Zero Energy GreenhouseBuild your own passive solar greenhouse for year round food production in any climate Fresh, local nutrient dense fruits vegetables are hard to find in winter in cold climates. Growing warm weather crops like tomatoes, bananas, avocados, and other perennials is nearly impossible using conventional structures. The solution for millions of backyard and small scale commercial growers is self heating solar greenhouses. The Year round Solar Greenhouse is