Biobizz Bio-Grow, 1 LBio Grow liquid natural plant food is a liquid fertilizer applicable to most types of dirt and substrate mixtures. Bio Grow activates the substrates' bacterial flora due to its base of 100% of Dutch organic sugar beet extract, commonly known as molasses. As with all Biobizz products, it has low phosphate contents (phosphates are considered harmful to the body and to the environment).