One of our favorite ways to trellis big, vining tomatoes is with string and a few tomato clips - that's it! When you transplant your tomato, you can either bury the string underneath your tomato to secure it in the ground, or tie the string to a stake and press into the soil. Then, tie the other end of the string to a simple structure above the tomato plant made of 2x4 lumber or metal conduit. Both are relatively inexpensive at most hardware stores. Our setup cost $50 to make and grows about 12

Stringing tomatoes is simple, quick, inexpensive, and effective! Grow plants vertically and save space, grow more, and increase the health of your plants by stringing them. | MIgardener