Answer: This plant can be propagated by seed (it may seed itself about) or by tip cuttings during the summer or by division in the spring. Of these, tip cuttings (or even layering) would probably be the easiest. Here are instructions for how to do these methods; some refer mainly to shrubs but the methods work just as well for vines, too.
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You might also consider layering.
Good luck with your project!
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