Greenhouses & Garden Sheds: Inspiration, Information & Step-by-Step Projects: Pat Price, Nora Richter Greer: Amazon.com: Books
A cold frame with a glass top can give you a 12-month growing season, even in Maine, and it's the easiest and most economical way to extend your harvest. Build the one described here, and you're on your way to fresh veggies year round.
You don't always need to build a big green house, why not try a mini greenhouse made from recycled bricks & windows
Green House idea love the surrounding gardens as edges thinking this will be great at my house with herbs
5 Steps to a DIY, Private Greenhouse - things you should consider when planning your greenhouse and ideas for creating your DIY greenhouse.
The greenhouse benches were added to house all the trays of seedlings come Spring.