Helianthus annuus Linnaeus. Common name: Common Sunflower, Mirasol. Phenology: Jun-Oct. Habitat: Disturbed areas, often cultivated in gardens, sometimes cultivated in fields. Distribution: Native of the Plains states south into Mexico. This is the common cultivated sunflower grown for its flowers, seeds, and oil.
Origin/Endemic status: Native
Synonymy ⓘ: = C, F, Fl7, FNA21, G, GrPl, Il, K4, Mex, Mi, NcTx, NE, NY, Pa, RAB, S, SE1, Tat, Tn, Va, W, WH3, WV; > Helianthus annuus L. ssp. annuus — Tx; > Helianthus annuus L. ssp. texanus Heiser — Tx; > Helianthus annuus L. var. macrocarpus (DC.) Cockerell — Oh3. Basionym: Helianthus annuus L. 1753
Links to other floras: = Helianthus annuus - FNA21
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FAC
- Eastern Mountains and Piedmont: FAC
- Great Plains: FACU
- Midwest: FACU
- Northcentral & Northeast: FACU
Heliophily ⓘ: 9
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Horticultural Information
Intro: Stout, erect annual of disturbed areas; native of the Plains states and often cultivated in gardens and agricultural fields.
Stems: Stems stout, branched, rough and hairy.
Leaves: Leaves mostly alternate (except lowermost), long-petiolate, oval, triangular or heart-shaped, 2-8 in. long, with 3 main veins, toothed, and with roughly stiff-hairy surfaces.
Inforescence:
Flowers: Composite flowers (heads) solitary or in open panicles; 3-6 in. wide; consisting of 17-40 large, yellow ray florets encircling a large center disk of reddish-brown, purple or yellow tubular florets. Overlapping oval bracts with long narrow tips surround the base of each head.
Fruits: Fruit a striped, finely hairy achene.
Comments:
Height: 2-10 ft.
plant sale text:
bloom table text:
description: Stout, erect annual of disturbed areas; native of the Plains states and often cultivated in gardens and agricultural fields.
stems: Stems stout, branched, rough and hairy.
leaves: Leaves mostly alternate (except lowermost), long-petiolate, oval, triangular or heart-shaped, 2-8 in. long, with 3 main veins, toothed, and with roughly stiff-hairy surfaces.
inflorescence:
flowers: Composite flowers (heads) solitary or in open panicles; 3-6 in. wide; consisting of 17-40 large, yellow ray florets encircling a large center disk of reddish-brown, purple or yellow tubular florets. Overlapping oval bracts with long narrow tips surround the base of each head.
fruits: Fruit a striped, finely hairy achene.
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cultural notes:
germination code:
native range:
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