This picture has been used (by myself) more times than I care to admit, so very sorry for the reposts to those who have seen it before...
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This was very easy to do. Drive four (about 3ft long) pieces of rebar into the ground leaving about 2 feet exposed and slip the PVC over it. NO need to drive the PVC into the ground. If you angle the rebar, you will be able to create a tension in the posts that help support during high winds.
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Cost for this one was -- about 7-8x PVC pipes at 8+ft long, 4x 3-way corners, and 2x "T's" and 4x 3-4ft lengths of rebar -- super cheap
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Here is a smaller one, covering a 2'x2' raised bed
This one, I drilled the rebar straight up and down but in the smaller footing, creating this arc in the PVC. This has lasted for three years and running strong so far
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Just some ideas beyond a standard hoop-house. I have both, and my hoop-house limits my plants when they're right next to the side walls and they get tall.
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