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Giant sunflowers are known for their imposing height, often growing between 8 to 12 feet tall or even taller under optimal conditions. Their stout stalks provide strong support for their large flower heads, which can reach diameters of up to 1 foot or more. These flower heads consist of a prominent central disk surrounded by bright yellow petals, creating a striking appearance in gardens and fields alike. Giant sunflowers are admired not only for their size but also for their rapid growth, often thriving in sunny locations with well-drained soil. They are popular for both ornamental purposes and as a source of seeds, which are nutritious and commonly enjoyed as a snack or used in cooking and oil production.