Smallanthus uvedalia aka Bear's Foot

Smallanthus uvedalia is a tall perennial in the daisy family. Its common names include bear's foot and hairy leafcup. It also appears under the older name Polymnia uvedalia. Its native range spans central and eastern America into northern and western Mexico. It grows beside streams, in meadows, and along woodland edges. It also grows in open woods and rich thickets. Some states report that it is becoming rare.

Plants grow fast and stand upright, without spreading aggressively. Garden plants reach 3–8 feet (0.91–2.44 metres) tall. They spread 2–3 feet (0.61–0.91 metres) wide. The green stems are hollow, ribbed, and angular. Some have purple marks or fine hairs. Opposite leaves clasp the stems to form small cups. Each leaf is triangular or egg-shaped, with palmate lobes. The rough green blades have teeth and paler undersides. Fine hairs cover both faces, and glands dot the surface. Leaves measure about 0.33–1 foot (0.10–0.30 metres) long and wide.

Clusters of yellow flower heads open from June through September. Each head has seven to thirteen outer ray flowers. Its centre holds forty to eighty tubular, male disc flowers. The heads measure about 0.08–0.25 feet (0.025–0.076 metres) across. Bees, butterflies, and other pollinators visit the blooms. The fruit is a small, ribbed achene with a reddish-brown coat. Its shape ranges from oval to round. Several birds eat the seeds. Native bees use the hollow stems as winter nesting sites.

Grow bear's foot in full sun or partial shade. It accepts clay, loam, or sand with good drainage. Moist soil suits it, but it tolerates dry spells. PFAF recommends a warm site with deep, rich soil. It is hardy in USDA zones 6–9. Its height suits the back of borders and fence lines. It also fits meadow, woodland, and pollinator plantings. Wind can bend the hollow stems, so stakes may help. Leave stems standing through winter to shelter nesting bees.

NC State reports no major pest or disease problems. It describes the plant as easy to grow and low-maintenance. PFAF lists no known food uses or hazards. That does not establish safety for people or pets. Records describe herbal use for inflammation, rheumatism, and skin sores. These historical uses do not establish treatment benefits.