The sunflower seed is the seed of the sunflower (Helianthus annuus). There are three types of commonly used sunflower seeds: linoleic (most common), high oleic, and sunflower oil seeds.

The bright petals of sunflowers are an iconic symbol of summer, and it's just an added bonus that these big, cheerful blooms produce the ultimate snack—sunflower seeds. Fun fact: Sunflower seeds ...