Jerusalem Artichoke Potted Plants in Different Varieties For garden lovers and self-catering. Jerusalem artichoke belongs to the sunflower family and produces tasty tubers in the soil. The tubers are very tasty and healthy. In the tubers of the topinambur the multiple sugar inulin is contained which can optimize the metabolism and contribute to the general optimization of the intestinal health. For this reason, Jerusalem artichoke is also known as diabetic potato. The plant grows up to 3.5 m high and forms beautiful yellow cup flowers in autumn. The tubers can be harvested throughout the winter and are available from late Otkber until the end of April.