Helianthus hirsutus Rafinesque. Common name: Hairy Sunflower. Phenology: Jun-Oct. Habitat: Woodlands and other sunny or semi-sunny habitats. Distribution: PA and MN, south to n. FL and TX.
Origin/Endemic status: Native
Synonymy ⓘ: = Ar, C, Fl7, FNA21, G, GrPl, K4, Mi, NcTx, NE, NY, Pa, RAB, S, SE1, Tn, Tx, Va, W, WH3, WV; > Helianthus hirsutus Raf. var. hirsutus — F, Il, Oh3; > Helianthus hirsutus Raf. var. stenophyllus Torr. & Gray — F, Il; > Helianthus hirsutus Raf. var. trachyphyllus Torr. & Gray — F, Il. Basionym: Helianthus hirsutus Raf. 1820
Links to other floras: = Helianthus hirsutus - FNA21
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Heliophily ⓘ: 7
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© Gary P. Fleming | Original Image ⭷
© Gary P. Fleming | Original Image ⭷
© Aidan Campos source | Original Image ⭷
© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Sonnia Hill | Original Image ⭷
© Joey Shaw source | Original Image ⭷
© Erik Danielson source | Original Image ⭷
© Aidan Campos source | Original Image ⭷Feedback
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Horticultural Information
Intro: Erect, rhizomatous perennial of dry open woodlands and prairies and other sunny or semi-sunny habitats.
Stems: Stems simple or fork-branched above, light green to reddish-purple, covered with spreading hairs.
Leaves: Leaves opposite (may be a few alternate), in pairs at right angles to each other; short-petiolate; lance-shaped with rounded base; to 6 1/2 in. long; with 3 conspicuous veins; usually hairy on both surfaces; with sandpaper-like texture above.
Inforescence:
Flowers: Composite flowers (heads) solitary or in small clusters; 2-3 in. wide; consisting of 8-15 yellow ray florets encircling a center disk of numerous yellow, tubular florets. Spreading, green, narrow, pointed bracts, with tips often reflexed, surround the base of each head.
Fruits: Fruit a brown, narrowly oval and flattened achene.
Comments:
Height: 2 1/2-6 ft.
plant sale text:
bloom table text:
description: Erect, rhizomatous perennial of dry open woodlands and prairies and other sunny or semi-sunny habitats.
stems: Stems simple or fork-branched above, light green to reddish-purple, covered with spreading hairs.
leaves: Leaves opposite (may be a few alternate), in pairs at right angles to each other; short-petiolate; lance-shaped with rounded base; to 6 1/2 in. long; with 3 conspicuous veins; usually hairy on both surfaces; with sandpaper-like texture above.
inflorescence:
flowers: Composite flowers (heads) solitary or in small clusters; 2-3 in. wide; consisting of 8-15 yellow ray florets encircling a center disk of numerous yellow, tubular florets. Spreading, green, narrow, pointed bracts, with tips often reflexed, surround the base of each head.
fruits: Fruit a brown, narrowly oval and flattened achene.
comments:
cultural notes:
germination code:
native range: eastern United States
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