Take a cutting from an existing plant while it is dormant, usually in late fall or early spring. Cut the stem long enough to include three nodes.
Wet the end of the cutting in water and dip into a powdered rooting hormone. If using a liquid hormone, dipping in water is not necessary.
Fill a pot with an equal mixture of high quality potting soil and coarse sand. Place the cutting into the pot deeply enough to allow it to stand on its own.
Soak the soil well enough to cause drainage from the bottom of the pot. The soil will need to be damp but not soggy.
Cover the cutting with plastic wrap or any other clear plastic container. If using wrap, use stakes to hold the plastic up so that it is not touching the cutting.
Place the pot in a sunny location that receives bright indirect sunlight for the majority of the day. Direct sunlight will burn a sensitive cutting.
Move the vine to a permanent location when it has reached 5 to 6 feet in length.