For economic reasons it is increasingly popular to start a sunflower oil plant for sunflower oil processing to make cheap sunflower seeds into more valuable and healthy sunflower oils. The sunflower is a distinctive, flowering plant (Helianthus annuus L.), the seeds of which contain a valuable edible oil that contains more Vitamin E than any other vegetable oil. Most sunflower oil is used in food products. The seeds of confection varieties of sunflowers are also sold for human consumption and birdseed.