The Maximillion  Sunflower grows mainly in the central part of the United States. The average success with this species is seventy  percent, and they may grow  three to ten feet tall. Numerous bright yellow petals, are found on the upper half of the unbranched stems. The Maximillion  doesn’t seem to be tempermental about soil, but requires full sun. The leaves are four to eight inches in length tapering on both ends. The germination is seven to twenty-five days. Maximillions are readily grazed  by cattle and deer. The scientific classification name is Asteraceace, and the scientific name is Helianthus Maximilliani. It is a true perinnial requiring  two years to become established. This information was found on Texas Aggie Horticulture web site.