Using Rooting hormone helps prevent fungus and bacteria from infecting your cutting and helps speed the rooting process. Most commercially available rooting hormone products contain a synthetic version of a class of plant hormones called auxins. These synthetic hormones are called IBA or NAA. Due to their synthetic nature, IBA and NAA are not approved for use in certified organic crop production. However, many gardeners and farmers–who lean organic, but choose not to be certified–use IBA and NAA, believing that these chemicals do not negatively affect the quality of their produce. If you want to use only natural products, both honey and willow bark water are reported to work well as a rooting stimulant.