Sunflower seeds are members of the family Asteraceae, which all form a composite head (capitulum) made of masses of simple flowers (florets) that each produce a seed if successfully pollinated. Sunflowers typically have between 1,000 to 1,400 florets, and potential seeds, per head. The capitulum is surrounded by petals, making the whole structure seem like one single flower. This family is vast, and includes daisies, chicories, dandelions, and, strangely, lettuce.
Bloom time: Summer to mid-autumn.