Miracle Gro produces dedicated tomato fertilizer products that are designed for keeping tomato plants healthy and producing fruit. This includes both granular and liquid-based tomato feed. For example, the 10-5-15 granular Miracle-Gro Shake 'N Feed Tomato, Fruit & Vegetable Plant Food available at Amazon or the Miracle-Gro LiquaFeed Tomato, Fruits & Vegetables Plant Food available at Walmart.