Don't see why not - you can grow almost everything else in containers. I'd make sure there is plenty of well rotted compost in the container as I find they are very hungry.
Hi Tilly, I have successfully grown rhubarb in a patio tub now for a couple of years. It's positioned at the side of the garden shed, which I think is quite a shady spot.
Thanks for all the answers. I have now planted it in a big pot and put it on the patio. The instructions say that I can't harvest it this year, so it's going to ba a long wait for a homemade rhubarb crumble. I might have to cheat and go and buy some at extortionate prices