I came across a simple diy greenhouse, using old windows and spare lumber. It was built for under $100. Their framing is exactly what I need to recreate!
After taking inventory of my supplies on hand, it turns out I have all the windows I need and two fabulous 4x4 foot plexiglass panels (thanks dad!). I will need to buy a roof panel, siding, a door and some lumber. This means I get to go shopping at my favorite place ever, Earthwise Salvage!!
With a total re-do of my Not So Secret Garden, in addition to the greenhouse, I'll also be adding a water garden made from a galvanized tub. Come on Spring!