Carolyn, I am going with Calud's design for most part. Its field tested and easy enough to build. So most of the posts will be anchored in ground. One of the legs of the C runs on the patio, so I cannot get the posts in ground. Those two posts will be done in a bucket and will use the design that Worth has suggested.
The posts on the patio are not for growing plants between them. I plan to let the plants grow across once they reach the top of the post. So the top of the C will have twine going between the top conduit and it will let the plants grow even more.
Luigiwu .. Its a nice system, but I wanted to stay away from wood since its heavy and rots over time. (also PVC is cheaper)
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