I believe that kale is an ornamental plant, not an edible. Or rather, it's a bit like grasshoppers and carp: Edible, but I've never been that hungry.
Well, my garden got all put to sleep last weekend. Junk cleared out, chicken coop cleaned out and resulting nastiness tilled into the ground. We're showing our house this weekend and I think it's going to sell, so this might turn out to have been our last struggle with the Badger Manor chunck o' clay that is our garden patch. We shall see!