I am trying to build an arbor with just two posts for a wisteria that seems to be healthy and growing this spring (Zone-5, OHIO- Cincinnati's Northern Suburb). I just put in two posts on either side in concrete. Now- I have to put the top structure to carry the vines. Can any one suggest a simple plan for a novice with no extensive wood working equipment?
Wood, unless it's pressure treated, shouldn't be in direct contact with concrete. Use a saddle, like they use for deck posts.
Remember that you need hot dipped or stainless fasteners for ACQ wood, and that the load you're planning is not just some fairly heavy climber, but wind load as well.
If you don't want a plain cross bar, shop for finials and just nail them to the ends, horizontally.
Instead of a complete structure, consider wire rope. See my for how I did this for grape vines. In my case, I had two vines and three posts. You can modify this arrangement for a single vine and two posts. I will be doing that when my slipped hill is repaired; the restored landscape will have a third vine by itself.
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