A Tire Tower for Potatoes
Increase your potato yield by growing potatoes in a stack of tires. Fill a tire with soil and plant two whole or halved seed potatoes about 2 inches deep. Once the potatoes have sprouted 6-10 inches of foliage, place a second tire atop the first and fill with more soil, leaving 3- 4 inches of foliage exposed.
Repeat the process again, and your three-tire tower will triple your potato crop. Potatoes sprout on the underground stems – and the taller the stems, the greater the number of tasty tubers.