Bio-Grow is OMRI listed. Its based on 100% organic Dutch sugar beet extract, so it is packed with sugars to build Brix readings in plants and rejuvenate the life of your soil or activated compost. It is also used as a plant tonic in flowering. Translated from the original Dutch Bio-Groei (bee-yo ghru-ee), it has been known to work wonders in topsoil and increase the flavor of heirloom tomatoes and other garden-variety vegetables.