Helianthus giganteus
| Helianthus giganteus | |
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| Species: | H. giganteus
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| Helianthus giganteus | |
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Helianthus giganteus (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.[2][3][4]
Helianthus giganteus is a perennial herbaceous plant growing up to 4 m (over 13 feet) tall. The leaves are slender, lanceolate. The flower heads are bright yellow, up to 7 cm (2.8 inches) in diameter. They are most commonly found in valleys with wet meadows or swamps.[5][4]
References
- ^ The Plant List, Helianthus giganteus L.
- ^ Germplasm Resources Information Network: Helianthus giganteus
- ^ Biota of North America Program 2014 county distribution map
- ^ a b Flora of North America, Helianthus giganteus Linnaeus, 1753. Giant or tall sunflower, hélianthe géant
- ^ Wisconsin Plant of the Week: Helianthus giganteus
