Most products made to deliver rooting hormones to plant materials come in a dry form and in one, maybe two, strengths. Hormex goes way beyond them with 6 strengths of dry hormone preparation and a liquid concentrate of hormone in general purpose strength. Their website has great guidelines that outline examples of species that are best cloned with which strength, and you can write to me for suggestions. Too often when a plant does not root, gardeners figure they’re to blame. Sometimes that’s the truth, but sometimes it’s the right strength product. For thick cuttings, for green stems, and to quickly get a lot of cuttings ready to stick, use Hormex Liquid Concentrate. It penetrates readily, requires no more than a 15 minute soak, and makes for a simple drench during cloning.