Woodland Sunflower (Helianthus divaricatus)

     

    

  

Woodland Sunflower (Helianthus divaricatus)

Woodland sunflower (Helianthus divaricatus) grows two to six feet tall and carries its bright yellow flower heads in loose, open clusters. Each bloom holds a ring of clear yellow rays around a slightly deeper yellow disk. The leaves appear in opposite pairs and are typically sessile or nearly so, shaped like narrow lances with finely toothed edges and sharply tapered tips. Their matte green surfaces can reach six inches in length. Stems are rough or lightly hairy, green to reddish‑green, sometimes showing a purplish tone near the base. The plant favors part shade and dry to medium soils, tolerating occasional moisture only where drainage is good. It settles naturally along forest edges, rocky bluffs, savannas, and roadsides—places where light shifts through the season and soil conditions vary.

By late summer, woodland sunflower supports a wide mix of pollinators, including bees, butterflies, and beetles drawn to its nectar. Later in the year, its seeds feed small birds and mammals. In Wisconsin, it serves as a host for several native caterpillars, including silvery checkerspot (Chlosyne nycteis), gorgone checkerspot (Chlosyne gorgone), sunflower moth (Homoeosoma electellum), banded sunflower moth (Cochylis hospes), and sunflower borer moth (Papaipema necopina). It can occasionally support painted lady (Vanessa cardui) larvae as well.

Sources: 

USDA Plants Database – Helianthus divaricatus

BONAP North American Plant Atlas – Helianthus divaricatus

Minnesota Wildflowers – Woodland Sunflower

Illinois Wildflowers – Woodland Sunflower

Wisconsin DNR – Native Plant Communities (for habitat)

Butterflies and Moths of North America – Host Records

Prairie Moon Nursery – Helianthus divaricatus

(SF)