Great garden in a small space for a short season.
Recycle an old swing set into a green house. Put a shelf across the middle of the swing set to add garden space, or simply hang upside down pots or planters from the existing swing set hooks. Add a climbing wire for beans. Then, set up your watering system, plant, cover with plastic and watch your garden grow. This double decker greenhouse is sure to add a couple of weeks growing time on each end of the growing season. That's a precious month for a zone 4 gardner.
Step 1: Prepare the Plot
My awesome Mother help me dig down 8 to 10" with a pick and shovel and then removed half of loosened hard sand and clay. Next, we mixed in some really excellent dirt from a worm farmer which was one-third worm castings, one-third manure and one-third top soil. I paid $40 for 1.5 yards; this project took 1 yard. The worm farmer said more than one-third worm castings will produce great foliage but no flowers. This is a picture of my Mother and the Earth Angels blessing my new garden spot.
The swing set I salvaged from a metal pile at the dump had a foot print of 5.5' x 10.5', plus we added an extra 4' of garden to one end, since I had the space.
Step 2: Greenhouse Frame in a Flash
Simply haul in the swing set dump find and set it in place over the garden plot. Remove any swing set hardware that crests the top bar and may tear the green house plastic. I removed the swing set glider hardware shown with vise grips rather than take time to find the right allen wrench. You will want to leave the swing hooks on the top bar for suspending potted plants or climbing wires.
Next, decide whether to hanging potted plants or add a shelf. Since I was lacking upsidedown pots or hanging pots, I went with the shelf.