10 Most Beautiful White Sunflower Varieties

The sunflower (Helianthus annuus) most of us grow is a true annual plant that sprouts, matures, flowers, and dies in a single growing season. Like many annuals, it self-seeds very easily, and, in some regions, especially the Midwest, it can become invasive. Named cultivars, however, are often hybrid plants that are either sterile or produce seeds that don't come true when planted.