SunflowerSunflower is one of the most popular flowers in Romania. is an annual plant native to the Americas that possess a large inflorescence. It s height is between 1.5 and 3.5 m. Sunflowers make edible seeds. The whole seed (fruit) are sold as a snack food, after roasting in ovens, with or without salt added. Sunflowers can be processed into a peanut butter alternative, sunbutter. To grow best, sunflowers need full sun. They grow best in fertile, moist, well-drained soil with a lot of mulch. In commercial planting, seeds are planted 45 cm apart and 2.5 cm in deep. The sunflower s seeds also give oil. But this oil have a higher level of monounsaturated fats even than the olive oil. However, for commercial farmers growing commodity crops, the sunflower, like any other unwanted plant, is often considered a weed. Sunflowers can be used to extract toxic ingredients from soil, such as lead, arsenic and uranium.