Helianthus giganteus

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Helianthus giganteus, the giant sunflower or tall sunflower, is a species of Helianthus native to the eastern United States and eastern and central Canada, from Newfoundland west to Alberta south to Minnesota, Mississippi, and South Carolina.[1][2][3]

Description

Helianthus giganteus is a perennial herbaceous plant native to the northern United States and southern Canada that can grow up to Script error: No such module "convert". tall with instances to 4m (13 feet). The leaves are approximately 1 inch wide by 7 inches long, and partly rough. The flower heads are bright yellow, up to Script error: No such module "convert". in diameter. They are most commonly found in valleys with wet meadows or swamps[4][3] and even near river banks.

Characteristics

The stalk is purple to red with spreading white hairs on it. The leaves are lancolate and alternate. This perennial sunflower has a fibrous root system and spreads by seed and rhizomes. These rhizomes will form a large clump.[5]

Cultivation and use

The Choctaw Indians of the southeastern United States have traditionally cultivated the Helianthus giganteus and made a palatable bread by mixing the ground sunflower seed with that of ground maize.[6]

References

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  4. Wisconsin Plant of the Week: Helianthus giganteus
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