The botanical name for Sunflower is Helianthus. The Greek word "helios" means Sun and "anthos" means Flower. It is aptly named after the sun which it resembles.
Sunflowers are native to the Americas, from southern Canada to South America, and they were first domesticated in Mexico.
Sunflowers have nodding daisy like blossoms that can be 2 to 10 or more inches in diameter, depending on the variety. The Sunflowers petals on most varieties surround yellow, brown, green or deep purple centers, although some Sunflowers appear not to have center disks.