Seed Savers Exchange's extensive selection of heirloom sunflower seeds comprises plants of diverse heights and colors as well as miniature and double-blooming varieties. Browse and buy the seeds you need to grow these edible, ornamental, and inspirational garden classics. Whether you are looking for sunflowers to brighten your garden or wish to grow sunflowers for seed, you’ll find an extensive array of unique varieties in our collection. Plus, sunflower seeds can remain viable for up to six years.