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Helianthus hirsutus Rafinesque. Hairy Sunflower. Phen: Jun-Oct. Hab: Woodlands and other sunny or semi-sunny habitats. Dist: PA and MN, south to n. FL and TX.

Origin/Endemic status: Native

Synonymy : = Ar, C, Fl7, FNA21, G, GrPl, K1, K3, 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

Links to other floras: = Helianthus hirsutus - FNA21

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Heliophily : 7

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Aidan Campos source | Original Image ⭷
image of plant© Sonnia Hill | Original Image ⭷
image of plant© Joey Shaw source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Aidan Campos source | Original Image ⭷

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Horticultural Information

NCBG trait

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