When is an artichoke not an artichoke?When it’s a sunflower!Unfortunately a totally inappropriate vernacular is the least of the problems of the Jerusalem artichoke (Helianthus tuberosus).It  has a reputation as a garden thug and according to the gardener John Goodyer, the 17th century gardener and botanist,  quoted  in Gerard’s Herbal “Jerusalem artichokes: which way soever […]