Tomato plants require support, in the form of either tomato cages or stakes. If tomatoes are left on the ground while still on the vine, they will quickly rot, according to Tomato Gardening Guru. Staking tomato plants gives the plants the stability needed for the plants to prosper.
Place one of the sticks in the ground, about 6 inches deep, 2 inches from the tomato plant.
Cut a piece of twine about 6 inches long. Tie the tomato plant to the stick, using the twine, at the base of the plant. Leave an inch of room between the plant and the stick to give the plant room to grow.
Move 4 to 5 inches up the tomato plant and tie the plant to the stick again, using the twine.
Continue moving up the plant another 4 to 5 inches and tie again if the plant is tall enough.