Copy permalink to share
Asteraceae
Helianthus

not marked as a favorite taxon 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.

Glossary (beta!)

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

Show in key(s)

Show parent genus | Show parent in key(s)

Heliophily ⓘ: 7

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.

image #1 of Helianthus hirsutus© Gary P. Fleming | Original Image ⭷
image #2 of Helianthus hirsutus© Gary P. Fleming | Original Image ⭷
image #3 of Helianthus hirsutus© Aidan Campos source | Original Image ⭷
image #5 of Helianthus hirsutus© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #6 of Helianthus hirsutus© Sonnia Hill | Original Image ⭷
image #8 of Helianthus hirsutus© Joey Shaw source | Original Image ⭷
image #9 of Helianthus hirsutus© Erik Danielson source | Original Image ⭷
image #12 of Helianthus hirsutus© Aidan Campos source | Original Image ⭷

Feedback

See something missing or incorrect about Helianthus hirsutus? Let us know here:
  1. Please include your name and if possible, email in case when need to clarify what you wrote.
  2. If you opt out of including email, please be as specific as possible (e.g., which photo is incorrect?)
  3. Please do not submit questions asking to identify plants or about horticultural topics (e.g., how do I control an invasive plant in my garden?). Instead, those questions can be submitted here for the Carolinas region only.
  4. Please do not send us feedback about unkeyed species as this work is ongoing.
  5. Please allow time for flora edits to show in our next data release. We greatly appreciate your feedback but may require extra time to research complicated taxonomic issues.

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



0 unsaved edits on this page.