I was cleaning up the back parking area/alley. (Canadian thistles to dig up, trash and dead vegetation etc.)
The Jerusalem artichokes I had planted last spring failed to bloom and the stalks I had left standing for winter interest (read: garden clean up laziness) now looked sad and forlorn. So I started pulling them up, hoping new ones will grow, but feeling pessimistic about their chances.
But attached to nearly every fibrous stem were little tubers! I shall roast them this weekend with sage and bay leaves.