 All types of trumpet vines can be started from cuttings taken during late spring and into the summer. Be careful as you take the cuttings, stick them, that you always insert the bottom ends of the stems, those parts that were toward the roots, down into the potting soil. If they're hanging upside down, it can be easy to make a mistake. And finally, to answer a question many people ask, how can I get it out of my yard?