Vine that withstands freezing roots
I am looking for a vine that can withstand the cold in Zone 5 (Chicago)
in containers. I have 2 copper pots that are approx 36" high and 16" square at the top (tapers down to base of about 8 " square). I am looking to grow a vine (preferably fast growing) on a large trellis and there is nowhere other than these pots to put it. I tried grape vines and a couple of other things and they didn't make it through winter. The location gets partial to full sun. The two pots need to cover a trellis approx 20 feet long and 2 feet high above my fence. I was considering clematis, but think that the metal containers will make the roots get too warm, which I know they don't like. Thanks |
I don't know that you have a chance to grow any vine in there. The pots
are small for a vine, first of all. Second, you are right that you lose a lot of zones when you leave plants in pots outside. Just to give you an idea, I lost all the lemon balm that I had planted in a much larger pot outside (2.5 feet in each direction), with good thermal contact to the ground, and lemon balm is hardier than grapes (and I live near Detroit, which is warmer than Chicago). But the jujube which is in the pot survives and thrives to this day. So, I am guessing that anything hardy to Zone 3 will survive - I know of no vines that hardy. Perhaps an annual vine, such as sweet potato? That way you can change the soil every year and have it prosper. |
I guess a possibility is growing something that gets cut back in the
fall and moving the pots to my garage. It is not heated, but will be protected from the wind. I would need something that grows very quickly though to cover the length of my trellis if it is going to start from scratch each sprint. |
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