Bio·Grow It is a liquid fertilizer that can be used for growing with most potting soil and substrate mixes. It is based on a 100% organic sugar beet extract (also known as vinasse). This by-product derived from the transformation of sugar cane into sugar is the result of the natural fermentation process. The starches in the sugar are then treated with enzymes that produce glucose, which, along with other plant nutrients, helps produce rich sources of nutrition for soil microbes. Thus the microbial population grows and the soil becomes more prosperous. The sugars and natural potassium of Bio·Grow they activate the bacterial flora of the substrate, and guarantee generous harvests of sweet and delicious fruits. It is a complete fertilizer to be used throughout the entire growing and flowering period.