Rootech Cloning Gel is the strongest cloning gel money can buy and is powerful enough to propagate even the most difficult plants. Its premium formulation of plant hormones (0.55% I.B.A.), vitamins, and nutrients promotes rapid, healthy root development. Technaflora's unique manufacturing process creates an ultra-thick, smooth gel. Indole-3-butyric acid is a plant hormone in the auxin family.