Rhubarb should do well in our hardiness zone. My mom had a large patch of it along the side of one of our outbuildings that she would pick from whenever she needed rhubarb, and it was about as maintenance free as you could get for twenty years or more. It's probably still producing rhubarb for all I know. I planted three rhubarb shoots last year. Two of them never did come up. A third one grew a few good leaves, but it's too early to tell if it made it through the winter. I late spring, I planted three more. All three developed a little bit of green, but only one expanded into a leaf and then the leaf died away about as quickly as it came. This morning, I planted three more in the same area but, as I said, it's too early in the year to know whether any of the ones from last year made it through the winter. Perhaps even some of the ones that didn't do anything last year might still be alive, and willing to begin looking like an actual plant this year. I'm not even wanting to have eatable rhubarb from them this year, so long as I have plants that look like they're alive.