Measure & cut wood boards
Measure and cut each of your 4 wood pieces into thirds - 24" in length. These are the wooden slats your garden pots will hang from. Measure and cut the 2" x 2' in half - 48" in length. Sand any roughly cut edges until smooth.
Line up wooden slats
Place each 24" wooden slat side by side, and use nail hards as spacers to keep a uniform gap between each slat.
Construct stand & frame
Place your 2" x 2" wood pieces an equal distance from the sides. This is the stand that will hold your frame up, so place them approximately 3" from either edge. Nail through the 2" x 2" wood stand to attach each 24" slat from the back. 2 staggered nails through the 2" x 2" to each slat will ensure a strudy frame.
Paint & seal board
Stain or paint the board a color of choice. Be sure to seal it with a clear polyurethane graded to withstand the outdoor elements.
Slide hangers into gaps
Slide the end of an 'S' style shower curtain hook into the gap between the slats. Be sure to account for the height of the hanging plant in your placement, but keep in mind, you can always move them to accomodate more plants or gardening tools.
Place river rocks
Place river rocks at the bottom of each jar. This isn't only decorative, but it allows you to see if you're overwatering and allows root aeration. Both of these are important since the jars do not have the drainage a normal garden pot would.
Break up the roots around your plants and place them atop the river rock. Add garden soil around the edges.
Use a chalk marker to write the name of each plant on the placeholders. Insert a garden marker into each plant.
Embellish & place board
Hang your newly potted plants from your garden frame and watch them grow. If the board will be sitting on your front porch, try adding your house numbers to the top as an embellishment.