Thinopyrum Ponticum, or more commonly know as Tall Wheatgrass, is a graminoid with gray-green foliage and yellow flowers of the genus Thinopyrum. It has a rapid growth rate and a height of 5 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring, blooms during early summer and is intolerant of shade. Thinopyrum Ponticum or Tall Wheatgrass's floral region is North America US Lower 48, specifically in the states of Arizona, California, Colorado, Iowa, Idaho, Illinois, Missouri, Montana, North Dakota, Nebraska, New Mexico, Nevada, Oregon, South Carolina, South Dakota, Texas, Utah, Washington 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