Common Name: Jerusalem artichokeScientific Name: Helianthus tuberosus L.Family Name: Asteraceae (Compositae) - Aster or Sunflower FamilyIdentification NotesLife Cycleintroduced perennial, reproducing by seed, rhizomes and tubers at rhizome tips Stemsupright, very tall, branched above, hairy, rough, grooved Leaveslower leaves opposite lower, upper leaves alternate, oval to lanceolate, upper surface rough, lower surface hairy, toothed margins, tip narrowly pointed; petioles winged Flowersheads of 12 to 20, large, yellow ray (ligulate) surrounding darker, yellow disc (tubulate) florets, bracts green and spreading; clusters terminal