I have a 6' wisteria plant that I want to protect from freezing.?

I live in NW Washington and last year the plant I had died and didn't survive. The one I have now is in a big pot and I have brought it in my screened room, but I don't know if that's enough protection. Also, do I cut it down to promote new growth in the spring?

I have a 6' wisteria plant that I want to protect from freezing.?
The screened room is not enough protection from freezing if it is a young plant. To my knowledge the Wisteria is a vine plant so prunning is a must, even during the winter. Youg plants benefit from trimming them down and will flower earlier in their lives if done so. Is it Chinese or Japanese? I take it that it is not fully grown because it should survive through the winter being a vine and all. It will need a lot of sun. If there is a spot inside that has a lot of sun then bring it in. Or maybe invest in a plant light for indoors. If not then maybe you should invest in a fire safe, portable heater for the screened area near the plant. If you trim it and feed it well, it should survive through the winter. Good luck!!
Reply:Doubt your other one died from freezing. Wisterias are freeze-hardy in zones 5-9, and your area should be fine. Put in the ground outside and it should be ok. Don't trim unless you need to, as it will bloom on last years' growth, not new growth.
Reply:I think your problem is in the container, rather than the cold hardiness. Plants grown in containers over the winter are subject to damage, because their roots are above the ground, rather than planted in it. So your wisteria should be hardy where you are, but because of the way it's being grown, it died.





An unheated room, might, be enough protection. Certainly worth the try. Keep it moist throughout the winter. Place the plant against the interior wall.





Don't cut your wisteria back... it blooms off of mature wood, I've heard that the wood has to be seven years old to produce flowers. You don't want to start from scratch every year?





Good luck-





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A nod to Scout485...