Rooting hormones are used to increase the chances of success when growing from clones or cuttings. The most commonly known rooting hormone is I3B (indole-3-butyric acid). This formula is available in powder or liquid form. To use the hormone, score and moisten the cutting and dip it in the powder, then plant the cutting in the desired, high quality medium. Do not allow rooting hormone to come in contact with established plants, because it can be toxic.