About 5 years ago we planted a wisteria about 20’ from a trumpet vine. It never blossomed but this year we had orange trumpet flowers among the lush vines. Not being able to adequately distinguish trumpet leaves from wisteria, I trimmed it back to the trunk (photo). Our zone in upstate NY is 6a. Will it survive and what do you think it is?
Certified GKH Gardening Expert
It will survive, but I can't say without a doubt that this is Wisteria. This could, very well, be Campsis. Whichever it is, you will need to let it re-grow in order to know for sure.
Either species will come back, easily, after a hard prune.