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Giant sunflowers, known scientifically as Helianthus annuus, are impressive plants that can grow to towering heights, often reaching between 8 to 12 feet (2.4 to 3.7 meters) or even taller in optimal conditions. Their large, bright yellow flower heads can measure up to 12 inches (30 cm) or more in diameter, consisting of numerous smaller florets arranged in a spiral pattern. These sunflowers are known for their rapid growth and their ability to follow the sun throughout the day (a behavior known as heliotropism), with the flower heads typically facing east in the morning and west in the afternoon. They are popular not only for their size and beauty but also for their seeds, which are edible and commonly harvested for snacks, oils, and bird feed. Giant sunflowers are often grown in gardens for their ornamental value, as well as in agricultural settings for commercial seed production.