Extend your growing season with these cheap and easy DIY Greenhouse ideas. There are full tutorials and plans for cold frames, a-frames, lean-to's, miniature greenhouses, and much more. Many of these greenhouses use cheap building materials like pallets and repurposed materials like windows or doors. There are different size greenhouse projects to choose from, so whether you have tons of space or are looking for small greenhouse ideas, there are plenty of backyard greenhouse ideas for everyone.
