When buying Espoma Garden-tone you are buying a all natural plant food formulated specifically for vegetable gardens. It is safe, long lasting, and will provide the nutrients necessary for vigorous and productive plants. Garden-tone's all natural formula contains Bio-tone®, our proprietary blend of beneficial microbes. Bio-tone biologically enhances our natural plant food to ensure superior plant growth. Buy Espoma Garden-tone a name you can trust in all natural plant foods.