These supports work even for the largest tomatoes. Wearing protective gloves, use a bolt cutter to snip cross-wires on one 6-foot edge of a 6-by-5-foot piece of concrete-reinforcement wire; leave a "fringe" of wire ends, each about 3 inches long. Repeat on other long side. Cut 6-inch fringe on one short side. Roll wire to form a cylinder, with long sides touching, so that the last complete grid sections on both sides overlap fully. Bend back fringe around cage to secure. To anchor, sink 6-inch fringe 9 inches into soil. Tuck back young branches into cage as needed.