Using a Trellis System - Your trellis system will need some kind of support: posts or Studded T Posts driven into the ground are typical solutions. Lace heavy twine or wire and pattern string from top to bottom to support the crop. - My Garden Win
A great way to make an easy and quick green bean trellis? Tie the strings to a rock! Then tie the strings to the top of whatever you’re letting your beans grow up (porch, fence, house, neighbour’s car) with the rock falling at the base of each bean plant.