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Old January 10, 2016   #5
Join Date: Feb 2006
Location: Back in da U.P.
Posts: 1,343

i do my pole bean growing on 5 ft fencing that comes in 50 or 100 ft rolls attached to T posts. it might be 4 ft fencing. when the vines get to the top, i start threading them into the fencing otherwise they flop over, and become a tangled mess. i would say the black swamp pole bean can exceed 10-12 ft in length if allowed to grow straight up. my uncle steve pole bean has grown up 8 ft fencing to a string trellis about 8 ft in length attached to the house, and was still growing when it reached the house before frost killed it. that was in the detroit area.
i hope you have good luck with black swamp. its a good un.

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