This week we are talking about cold frames. A cold frame is similar to a greenhouse, except that it is only used in the cold season to help tender seedlings grow before optimum climate conditions by trapping in heat overnight. A cold frame is not climate controlled. My previous “greenhouse” was really just a large cold frame. Here is a great article explaining the two: The Differences Between a Greenhouse and a Cold Frame Our old cold frame Do you have a cold frame?  I don’t currently have one, but I just ran buy Habitat Restore and picked up 6 windows for $4 each so I could put something together this…