When the pioneers formed long wagon trains in the 1850's, one of their favorite foods was a wild bush found along the sides of the trails. It was the sunflower seed and they found it was an excellent snack. Over the years they threw away the seeds as they munched and the early wagon trails always had sunflower plants along the sides of the routes. over the years the crop because a dry land crop. It doesn't take much to grow and the price was always cheap. Sunflower plants are found primarily in the mid lands of the USA - Kansas, North and South Dakota, Minnesota, Nebraska, and Colorado. The sunflower is used both as bird food and the confection variety is also a snack food roasted and salted for fun eating..