Purple Prairie Clover (Dalea purpurea)

 

Purple Prairie Clover (Dalea purpurea)

Purple prairie clover is a native, perennial legume widely found in Midwestern tallgrass and mixed‑grass prairies, including throughout Wisconsin. It typically grows 1–3 feet tall, thriving in dry, sunny prairies, open meadows, and sandy or gravelly soils. Its flowers are very small—about ⅛ inch (3–4 mm) across—and consist of five purple petals surrounding a golden center of protruding stamens. These tiny blossoms are densely packed into a cylindrical, thimble‑shaped flower head that is usually ¾ to 2 inches long. The flower head blooms in a distinctive ring that moves upward as the season progresses. The foliage is fine‑textured, with alternate leaves divided into 5–7 narrow leaflets, each typically ½ to 1 inch long. The plant’s overall appearance is airy and delicate, contrasting with the vivid color of its blooms.

As a nitrogen‑fixing legume, purple prairie clover plays an important role in prairie soil health, enriching the soil and supporting plant diversity. Its flowers are highly attractive to native bees, butterflies, and other pollinators, making it a valuable species for prairie restoration, pollinator plantings, and dry native gardens.

Sources:

USDA NRCS Plant Guide — Dalea purpurea

Lady Bird Johnson Wildflower Center — Dalea purpurea

Illinois Wildflowers — Purple Prairie Clover (Dalea purpurea)**

Minnesota Wildflowers — Purple Prairie Clover

Wisconsin DNR / Wisconsin State Herbarium — Dalea purpurea

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