A greenhouse that is used to grow native plants and is an actual building (as opposed to just plastic over a frame), that is insulated, vented, and well designed can be close to a zero energy user or even an energy producer with the use of alternative energy production on site and the reuse of waste materials.. Plants are only as strong as their greenhouse, making it important for you to use the right building materials for an environment your plants will thrive in. structure the structure of the greenhouse can be made from aluminum, galvanized steel, wood, or plastic.. The free greenhouse plans below include diagrams, illustrations, photos, written building instructions, materials/tools list, and everything else you need to build your chosen greenhouse..
