Amsinckia Lycopsoides, or more commonly know as Tarweed Fiddleneck, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) with green foliage and yellow flowers of the genus Amsinckia. It has a moderate growth rate and a height of 3 feet at maturity. Its duration is annual which means it grows for one season only. It's active growth period is spring and summer, blooms during late spring, is intolerant of shade and is routinely available commercially. Amsinckia Lycopsoides or Tarweed Fiddleneck's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, California, Colorado, Connecticut, Idaho, Illinois, Massachusetts, Missouri, Mississippi, Montana, North Dakota, Nebraska, New Hampshire, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Texas, Utah, Washington, Wisconsin and Wyoming.
Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming