Espoma tomato-toneEspoma Organic Tomato Tone for Sale Online Feed your tomatoes naturally with Espoma Tomato Tone. Tomato tone is made from natural and organic plant food ingredients and contains no sludges or fillers. The organics in Tomato tone breaks down gradually to provide safe, long lasting food reservoir throughout the growing season. Contains Bio tone, a proprietary blend of microbes that biologically enhances plant food to ensure superior plant growth.