Want to grow a ton of tomatoes, but plagued by evil soil or limited space? The Japanese Tomato Ring allows you to grow 5 lush plants in a space 3" x 3", which should supply any family with tomatoes from summer through frost. Basically, the Japanese Tomato Ring takes advantage of two things - your compost pile, and the tomato plant's propensity to grow roots along its stem. The ring allows your compost pile to provide your plants with support and food while its contents decompose and create soil.