Ask a Question forum: Trumpet vine in pot

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Name: Anna Z.
Monroe, WI
Charter ATP Member Greenhouse Cat Lover Raises cows Region: Wisconsin
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AnnaZ
Mar 19, 2015 8:41 PM CST
We are going to build a pergola this summer. I love trumpet vines on pergolas. Since I live on the Wisconsin/Illinois state line, ( supposedly zone 4b/5a) would a trumpet vine be hardy if I planted it in a large (20 inch, at least) pot and left said pot outside during the winter? I do have a greenhouse, so I could prune the beast back hard and put it in for the winter, or do they need a cold/dormant time? I really don't want to plant one in the ground because I know they can overtake an area in a short time. (think "The Trouble With Tribbles..........") LOLOL
Name: Celia
West Valley City, Utah (Zone 7a)
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Zencat
Mar 19, 2015 9:29 PM CST
I think the root systems are pretty big. I know the roots like to spread.
Name: Elaine
South Sarasota, Florida (Zone 9b)
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dyzzypyxxy
Mar 20, 2015 10:02 AM CST
Anna, I think it might survive a Wisconsin winter in the ground with a really good mulch, but not in a pot. The pot's up in the air and would freeze hard for sure. It would also dry out, and if you watered it, you'd get freeze/thaw and heaving plus probably break the pot.

Maybe if you could sink the pot into the ground for the winter, and mulch it really well that might give it a better chance. But that might be both more risky and more trouble than pruning it and putting it in the greenhouse.
Elaine

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Name: Anna Z.
Monroe, WI
Charter ATP Member Greenhouse Cat Lover Raises cows Region: Wisconsin
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AnnaZ
Mar 20, 2015 10:04 AM CST
I can prune and put in the g'house. That is not a problem. I will have to discuss it with the SU, maybe he won't care if it grows all over creation. LOL Just wanted to know my options.
Name: Kent Pfeiffer
Southeast Nebraska (Zone 5b)
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KentPfeiffer
Mar 20, 2015 2:16 PM CST

Plants Admin

I'd be surprised if trumpet vine failed survive the winter in a pot, even in Wisconsin. It's nearly indestructible in our climate, which is pretty similar to yours except ours is somewhat drier. The biggest problem will probably be the roots expanding to the point where they break the pot. You might need to dump it out of the pot each spring and severely root prune it, much as you'll have to do with the top growth.

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