Does this sound familiar? You're itching to start planting but it's still too cold out. Happens to me every year about this time, which means every year about this time I look for green house how-tos.
First up is Fun in the Making's clever remake of a garage door (pictured above). You can read all about the process here.
Craigslist or Freecycle weak on garage doors right now? Check this out, a greenhouse made of plastic bottles. Even the roof is plastic bottle 'tiles'.Here are all the details.
Don't have THAT many plastic bottles? Here's a tiny greenhouse made out of a plastic jug. Instructabler chtinico tells us to do it.
For something a bit bigger, here's a great cold frame made out of an old window. Here's the tute along with some good advise on using it.