Glorious Sunflower

The common sunflower (Helianthus annuus) is a large annual forb of the genus Helianthus grown as a crop for its edible oil and seeds. This sunflower species is also used as wild bird food, as livestock forage (as a meal or a silage plant), in some industrial applications, and as an ornamental in domestic gardens. The plant was first domesticated in the Americas. Wild H. annuus is a widely branched annual plant with many flower heads. The domestic sunflower, however, often possesses only a single large inflorescence (flower head) atop an unbranched stem.
Sunflower seeds were brought to Europe from the Americas in the 16th century, where, along with sunflower oil, they became a widespread cooking ingredient.
The plant has an erect rough-hairy stem, reaching typical heights of 10 feet. The tallest sunflower on record achieved30 ft 1 inch!!!
The plant flowers from June to September. What is often called the "flower" of the sunflower is actually a "flower head" 3–5 in wide, of numerous small individual five-petaled flowers ("florets"). The outer flowers, which resemble petals, are called ray flowers. Each "petal" consists of a ligule composed of fused petals of an asymmetrical ray flower. They are sexually sterile and may be yellow, red, orange, or other colors. The spirally arranged flowers in the center of the head are called disk flowers. These mature into fruit (sunflower "seeds").

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