Smooth Sweet Cicely (Osmorhiza glabrata)
Smooth sweet cicely is a native perennial of Wisconsin’s rich woodlands, typically growing one to three feet tall. In late spring, it produces delicate clusters of tiny white flowers, each only about 1/16 to 1/8 inch wide, arranged in small, open umbels at the tips of stems and branches. Like other members of the carrot family, each flower has five white petals, five stamens, and two slender styles that extend slightly beyond the petals.
Its foliage is one of its most distinctive features. The leaves are compound, fern‑like, and finely divided, usually three to six inches long. Each leaf is split into three main sections, and each section is further subdivided into smaller leaflets, giving the plant a soft, lacy appearance on the forest floor.
Smooth sweet cicely grows in moist, well‑drained soils of shaded to partially shaded woods, ravines, and slopes. It favors the humus‑rich, slightly acidic to neutral soils typical of mature forests. The plant is an important nectar source for a wide range of small pollinators, including bees, flies, wasps, and moths, all of which are drawn to the accessible flowers of umbellifers.
Reproduction occurs primarily through seed, which ripens in elongated, aromatic fruits typical of the genus. Seeds require a period of cold stratification to germinate, often sprouting the following spring. Unlike garden perennials, smooth sweet cicely is not typically propagated by division or cuttings; its roots are delicate, and the plant prefers to establish naturally from seed within stable woodland soils.
A long‑lived species, smooth sweet cicely persists quietly in the understory, contributing to the structure and diversity of Wisconsin’s forest communities. When brushed or crushed, its foliage releases a subtle anise‑like fragrance, a reminder of its place among the aromatic members of the carrot family.
UW–Madison Herbarium — Osmorhiza glabrata species account
Illinois Wildflowers — Smooth Sweet Cicely (Osmorhiza glabrata)
Missouri Botanical Garden — Osmorhiza glabrata profile
USDA NRCS Plants Database — Osmorhiza glabrata species information
Lady Bird Johnson Wildflower Center — Osmorhiza glabrata plant profile
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