
I watched that video, and a bunch of others, from Gardner Scott on making a tomato trellis for indeterminant tomato plants. He presented two methods of tying the tomatoes off to a twine. The first method was to wrap the vertical twine around the stem every so often as the plant grows. The second method he showed was using tomato clips, which clip on the twine, but you keep the twine straight and don't wrap it around the stem.
The rope/twine method would certainly be a lot easier to build than the wooden trellis system I have been thinking of building.
I found this
tomato clips 300 pack on Amazon...
View attachment 3774285

I have never used tomato clips. I wonder if a person could just use cheap zip ties and have them loose, like the clips, on the plant. Seems to me it would be the same. But zip ties that size are like $1.00 per 100 ties on sale and I have bags of them already in the garage.
I think I liked the clip method better. But either method would work if I built a trellis frame like I did last year for Dear Wife's bitter melons. I would just hang down twine to the plants as needed for them to grow up vertically.
I have lots of longer salvaged wood 2X4's to build another trellis like this...
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I also have some extra fencing to staple on to that frame if I ever wanted to use it for cucumbers, for example. I know how to easily build that trellis and it is rock solid.
Well, thank you for the suggestion. That twine/string method looks like a lot less work to make compared to some of the other designs I was considering. I think I might try it out this year.