First, select an appropriate substrate to mount the epiphytic plant onto. You can use anything from mosses to peat pellets to sand. Sphagnum moss is a popular choice, depending on the type of plant you have. Moisten the substrate and wrap it around the plant's roots. Then bind everything together with some string until the entire root system has been wrapped up tightly. Next, place the whole thing into a pot filled with potting mix. The pot must be large enough to allow the plant to sit comfortably without touching its sides. If necessary, add more potting mix to fill out the space between the bottom of the container and the surface of the substrate. Water thoroughly after planting.