Mr. Vine Eye said: But this might be useful:I had a book of knots, but gave it to a grandson. What I need is, I think, a knot called a "strangler" - tightens and stays tight.
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But this might be useful:
https://www.finegardening.com/article/learn-lashing-and-make-your-own-garden-trellises
"Have nothing in your garden that you don't know to be useful, or believe to be beautiful."