After you cut off the stem tip from a rubber Ttee plant, place it a jar of water for about an hour. This stops the sticky white sap from sealing the cut end of the stem. Once you remove the stem tip from the water, dip the cut end in u003ca href=u0022http://houseplant411.com/glossary/plant-rooting-hormoneu0022u003eRooting Hormoneu003c/au003e, and plant immediately. Hope this works for you.