I'm looking for Jerusalem artichoke tubers to plant - any offers from the Auckland area? Last year I noticed some familiar tall yellow daisy-like flowers in a verge planting and took some roots to plant. But when I dug them up in the autumn the tubers were not the large, pale, round, knobbly, abundant food source I'd anticipated. They were narrow, straight and bean-like, though still edible. I can collect, and even a handful to get me started would be appreciated.