What is the scientific name of the sunflower?

The scientific name of the sunflower is Helianthus annuus. It is the familiar annual sunflower cultivated for its towering flower heads, edible seeds, and valuable oil.

The name combines Greek roots: helios means “sun,” while anthos means “flower.” The species name annuus means “annual,” describing the plant’s usual one-season life cycle. Sunflowers belong to the daisy family, Asteraceae, so what looks like one large flower head is actually a cluster of many tiny florets.

The species is native to North America and was domesticated by Indigenous peoples thousands of years ago. Spanish explorers brought sunflower seeds to Europe in the sixteenth century, after which the plant became popular as an ornamental and agricultural crop.

Several related species can cause confusion. Helianthus tuberosus is Jerusalem artichoke, grown for its edible tubers, while Helianthus decapetalus and Helianthus giganteus are different perennial sunflower species. They are relatives, but they are not the scientific name of the common cultivated sunflower.