Coast of Maine 1.5cf Stonington Blend Grower’s Mix – High-Performance Organic Container Soil is a nutrient-rich, super soil engineered for vigorous container growing and heavy-feeding plants like tomatoes and other high-yield crops. Crafted by Coast of Maine, this premium organic grower’s mix blends mycorrhizal fungi, kelp meal, fish bone meal, alfalfa meal, worm castings, peat, coir, and lobster compost to create a biologically active growing environment that promotes strong root development and sustained plant growth. Designed for high-performance results, this Stonington Blend provides long-lasting nutrition—often eliminating the need for additional fertilizers when used in 15-gallon containers—making it an ideal choice for serious gardeners seeking professional-grade organic potting soil for robust, productive plants.