Rooting hormone isn’t necessary on every plant, but it may increase the chances of rooting and can speed up the process. They are made up of a plant hormone called auxin which stimulates root cell growth. They also carry a chemical that prevents rotting.  Many gardeners swear by using a homemade root treatment with honey. Dip the cut end in honey and similar results may occur. You can also use aloe vera gel and cinnamon powder as alternatives to rooting powder.