I cannot get rid of these! Not a big problem seeing as how I love Jerusalem Artichokes. Only downside is that they give you wind - not just the average 'blow a candle out' wind - I'm talking megawats of alternative energy - type wind. Nevertheless, huge fun with a group of close friends on a rainy day..
Jerusalem artichokes are named from the Italian word for sunflower - gira soleille - meaning turn towards the sun. This time of year there are attractive yellow flowers at the top of the plant which is about 12ft tall at the moment. Should be ready to dig up in December.