Prefab Greenhouse

One typical, small, prefabricated, plastic greenhouse comes packed in a do-it-yourself kit. The 6- by 8- by 7-foot model sells for under $80.00. Extra 4-foot sections are available so you can extend the house as much as you wish. The manufacturer claims it will stand up under 50-degree-below-zero weather. He recommends for it a $15.00 […]