I've got second year cascades in the ground, growing 2 vines per plant. However I am only able to get a 10' trellis. One of the plants is almost that high.
So instead of trying to get 2 vines up to 20' I thought of letting more vines comeup some more training string to 10'.
I was wondering, theoretically, if the yield from 4 vines going 10' high would equal the yield from 2 vines going up to 20'?