Attach the 4-foot conduit pipes and tighten the screws in the elbows.
Vertical Supports On A Patio, Balcony, Rooftop, or Waist High Garden
Vertical supports can also be added to patio, balcony, or waist-high gardens. They are constructed in the same manner. However, we suggest that they be no taller than 4 feet. Instead of using rebar in the ground to secure them, they are fastened to the garden box using special clamps screwed into the sides of the box. Buy those when and where you buy your conduit and lumber. In this situation, there's not a great strength with the vertical frame, so it would be necessary to put the struts from the top down to the south side of the box, and depending on how high, and your location, the wind, and the plant growth, you might have to provide additional support. The next page shows guy wires.
Now that the vertical frame has been constructed, it is time to add something for the plants to grow on. I used to use either special wide-opening fencing or good strong synthetic twine or cord, but then along came this beautiful, soft, indestructible nylon netting with large openings you can reach through. This nylon garden netting is now the only material I use for vertical gardening. Its white, keeps its color, cant be broken, will last forever, and is easy to work with. The netting is tied tightly and securely to the top and sides of the vertical frame, and the plants can then be gently woven in and out of the netting as they grow. The netting comes in 4- and 5-foot widths and various lengths and is available at most garden centers and catalogs. When we teach our classes, it is always fun to ask two of the strongest men to come up front and try and break the netting; they just cant do it!
If you live in a city and have no plot of ground to call your own, call your superintendent and ask for permission to build a rooftop garden.
To attach the trellis netting to your frame, first hook the netting on the two corners. Next; cut the netting at each connection. This will give you one long strand. (Be careful to cut on the same side of the connecting strand each time.)
Loop the long strand over the top of the frame and firmly tie a simple knot. Try to keep the length uniform so your tletting isn't crooked.
Make the same cuts down the sides of the frame and firmly tie knots around the supporting pipes (above).
Keep the netting tight and your vertical fame should be similar to the one shown here.
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