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Helianthus annuus Linnaeus. Common Sunflower, Mirasol. Phen: Jun-Oct. Hab: Disturbed areas, often cultivated in gardens, sometimes cultivated in fields. Dist: 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, K1, K3, 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

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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image of plant© Alan Cressler: Helianthus annuus, Raccoon Road, Clarendon County, South Carolina 1 by Alan Cressler source | Original Image ⭷
image of plant© guywallbanks, some rights reserved (CC BY) source CC-BY | Original Image ⭷
image of plant© jamie-aa, some rights reserved (CC BY), uploaded by jamie-aa source CC-BY | Original Image ⭷
image of plant© Daniel Cahen, some rights reserved (CC BY), uploaded by Daniel Cahen source CC-BY | Original Image ⭷
image of plant© Aidan Campos source | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Katherine Parys, some rights reserved (CC BY), uploaded by Katherine Parys source CC-BY | Original Image ⭷
image of plant© Aidan Campos source | Original Image ⭷

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Horticultural Information

NCBG trait

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.

comments:

cultural notes:

germination code:

native range: