The Greenhouses for Outdoors by Pure Garden are essential for any home gardener who wishes to extend their growing season. With 3-tiers of sturdy metal shelving for seed starting, herbs, vegetable seedlings, and flowers, this small greenhouse is made of sturdy steel tubing to stand up to the weight of heavier potted plants and is protected by a powder-coated paint to help resist rust and corrosion for long-lasting use indoors or out. The clear PVC cover on the greenhouses traps heat to help protect delicate plants from cold weather or frosts and features a zippered door that can be tied out of the way with the attached straps for venting on hot days as well as easy access to your plants.,The Greenhouses for Outdoors by Pure Garden are essential for any home gardener who wishes to