A recent seasonal garden magazine I was reading at a big box tire repair waiting room showed a article on potato towers. The particular gardener planted the potatoes then circled them with a concrete reinforcing wire circular cage and added straw and compost as the plant grew vertically. For aesthetics they covered the outside with reed covering. It gave me the concept to change it up a little. I had some tomato cages made out of galvanized hog panel. One of then was taller and wider than the other three so I cut that one in half.