Answer: Layering is the easiest method for home gardeners. Dig a hole next to the parent vine and bend one of the canes so that it runs down into the hole and back up again in a "U" shape. Bruise the bottom side of the cane and then bury it so that the growing tip is sticking up out of the soil. Weight it down if needed to hold it steady. Eventually the tip will form new growth and the buried section will root. When well-rooted, separate it from the parent plant and transplant to its permanent location.
You can also take cuttings once the new growth starts by taking a 4-6" long cutting, dipping it in rooting hormone and placing the cutting in a soilless potting mix. Cover the pot with a clear plastic bag with a few holes punched in it for air circulation. It may take awhile, but eventually they should root.
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