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// SPECIES PROFILE · PERENNIAL · MESIC · MOIST-SOILS · NATIVE

Wingstem

Verbesina alternifolia

Wingstem is a tall, striking perennial of moist bottomlands and stream banks, easily recognized by its namesake winged stems — narrow, leaf-like flanges of green tissue that run down the stem between the leaf nodes, giving it an angular, almost architectural profile. In late summer, the plant produces clusters of bright yellow, daisy-like composite flowers with reflexed rays that look, to many gardeners, like a yellow version of Ironweed. This is a plant of the rich, moist soils of river bottoms, creek banks, and floodplain meadows, and in NE Oklahoma it is a natural choice for the wet, sunny edges of rain gardens, detention basins, and streambank restoration projects.

// QUICK FACTS
Family
Asteraceae (sunflower / daisy family)
Life cycle
Herbaceous perennial
Native range
Eastern and central US — NY to GA, west to NE, KS, OK, and TX
USDA hardiness
Zones 4–8 (Tulsa = 7a/7b)
Mature size
4–8 ft tall; spreads by rhizomes to form colonies
Bloom
August – October (NE OK)
Flower
Yellow, daisy-like, 1–2 in across, with reflexed rays; many in open clusters
Sun
Full sun to part shade
Soil
Moist, rich; tolerates clay; pH 5.5–7.5
Water
Medium to wet; prefers consistent moisture; tolerates seasonal flooding
Wildlife
Late-season nectar for bees, butterflies, and wasps · seeds for finches · larval host for silvery checkerspot
Wingstem (Verbesina alternifolia) with distinctive winged stems and yellow flowers
Verbesina alternifolia — the diagnostic winged stem and clusters of yellow composite flowers in late summer. Photo: Rooted Revival.

Identification

[ field key — winged stems · alternate leaves · yellow flowers · late bloom ]

Habit & Winged Stems

A tall, erect perennial 4–8 ft tall, with stout, unbranched to few-branched stems. The most distinctive feature is the winged stem: narrow, leaf-like strips of green tissue extend downward from the base of each leaf, forming continuous "wings" along the stem. These wings are the origin of the common name and are unmistakable once noticed. The plant forms colonies via short rhizomes and can create dense stands in suitable moist sites.

Leaves & Flowers

Leaves are alternate, simple, lanceolate to elliptic, 4–12 in long, with finely serrate margins and a rough-hairy (scabrous) upper surface. The leaves are sessile or have very short petioles and taper to a sharp point. Flower heads are yellow, daisy-like, 1–2 in across, with 2–10 reflexed or drooping ray florets and a raised, greenish-yellow central disk. The heads are produced in open, branching clusters at the top of the plant from August through October, providing a valuable late-season nectar source.

Habitat & Range in NE Oklahoma

Verbesina alternifolia is native across the eastern and central US, from New York to Georgia and west to Nebraska, Kansas, Oklahoma, and Texas. It is a plant of moist, rich, alluvial soils: bottomland forests, river floodplains, stream banks, wet meadows, and drainage swales. In NE Oklahoma, it is common along the Arkansas and Verdigris River systems and their tributaries, where it forms tall, dense stands in the sunny, moist openings of the bottomland forest. It is an excellent indicator of rich, moist soil conditions and is a natural choice for rain gardens, bioswales, and other stormwater management features in full sun.

Ecology & Wildlife Value

[ late-season nectar · butterfly host · bird seed · colonization ]

Pollinators

The late-season bloom (August–October) makes Wingstem an important nectar source for fall pollinators, including bumble bees, honey bees, various solitary bees, wasps, and migrating monarch butterflies. The abundant yellow flowers bridge the gap between mid-summer and fall-blooming asters and goldenrods.

Butterfly Host

Wingstem is a larval host for the silvery checkerspot (Chlosyne nycteis), and possibly for other checkerspot butterflies that use Verbesina and related genera as host plants. The seeds are eaten by goldfinches and sparrows through fall and winter.

Horticulture & Care

Wingstem is a vigorous, easy-to-grow perennial for the back of a moist border, a rain garden basin, a streambank planting, or a bottomland restoration site. It requires consistently moist to wet soil and full sun to part shade to reach its full potential. Plant container-grown starts or bareroot divisions in spring. Space 24–36 in apart; colonies will fill in within 2–3 years. Wingstem can be aggressive in ideal conditions (rich, moist soil in full sun) and may need to be divided or thinned every few years to keep it within bounds. The tall stems may require staking in exposed, windy sites.

Sources & Further Reading

Hero photo: Rooted Revival.