Astragalus crassicarpus, commonly known as Ground Plum or Buffalo Plum, is a native perennial legume found in prairies, open grasslands, and rocky slopes throughout parts of Illinois and the Midwest. It thrives in full sun and prefers dry to medium, well-drained soils, especially in calcareous or sandy habitats.
This low-growing, mat-forming plant typically reaches 6 to 12 inches tall and is easily recognized by its pinnately compound leaves and clusters of purple, pea-like flowers that bloom in spring to early summer. After flowering, it produces distinctive, fleshy, plum-like seed pods that rest on or near the ground—hence the name "ground plum." These pods are edible when young and were historically consumed by Indigenous peoples.
For Illinois native plant enthusiasts, Astragalus crassicarpus is a unique and ecologically valuable species that adds early-season color, nitrogen-fixing benefits, and wildlife support to native plantings. It is particularly beneficial in prairie restorations and pollinator gardens, attracting bees and supporting soil health. Its unusual seed pods also provide visual interest and a historical connection to traditional food uses.
Astragalus crassicarpus, commonly known as Ground Plum or Buffalo Plum, is a native perennial legume found in prairies, open grasslands, and rocky slopes throughout parts of Illinois and the Midwest. It thrives in full sun and prefers dry to medium, well-drained soils, especially in calcareous or sandy habitats.
This low-growing, mat-forming plant typically reaches 6 to 12 inches tall and is easily recognized by its pinnately compound leaves and clusters of purple, pea-like flowers that bloom in spring to early summer. After flowering, it produces distinctive, fleshy, plum-like seed pods that rest on or near the ground—hence the name "ground plum." These pods are edible when young and were historically consumed by Indigenous peoples.
For Illinois native plant enthusiasts, Astragalus crassicarpus is a unique and ecologically valuable species that adds early-season color, nitrogen-fixing benefits, and wildlife support to native plantings. It is particularly beneficial in prairie restorations and pollinator gardens, attracting bees and supporting soil health. Its unusual seed pods also provide visual interest and a historical connection to traditional food uses.
Bloom: spring to early summer
Habitats: open grasslands; prairies; rocky slopes
Lifespan: perennial
Moisture: mesic to dry
Plant type (height): forb (6 to 12 inches)
Requirements: full sun
Soil: calcareous; sandy
