I am sorry for this delayed reply to your gardening question. We are transitioning to a new Q&A system and your question was unfortunately lost in the transition. I have discovered it now and hope this reply is not too late to be of help.
Trumpet vine is a fairly tolerant plant of moist conditions. It would be best to give it a planting bed raised about 8 inches high to keep the base of the stem from being kept too soggy wet.
It is possible to get rid of it with Roundup if you decide to down the line.
Thanks for the question. Please stop in again soon!
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