Whether you are growing heirloom tomatoes or any other variety of tomatoes, using Great Big Tomatoes Liquid organic Compost will ensure that your garden or container soil will help maximize plant and fruit growth. Our formulation for tomatoes includes beneficial microbes, humic acid and minor nutrients plus a large dose of a specially fermented biotic solution intended to boost the soil microbial population and help suppress disease. Works great for all our plants, not just tomatoes! Concentrated, add 4 oz. to 1 gallon of water.