Oligoneuron rigidium, commonly known as Stiff Goldenrod, is a native perennial wildflower found in prairies, savannas, and open fields throughout Illinois. It thrives in full sun and well-drained to moderately dry soils, making it an excellent choice for dry prairie gardens and native landscape restorations.
This robust plant typically grows 2 to 5 feet tall and features thick, rough stems and large, leathery, gray-green leaves that are broad and oval-shaped—unlike the narrow leaves of many other goldenrods. In late summer to early fall, it produces flat-topped clusters of bright yellow flowers that are highly attractive to bees, butterflies, and other pollinators.
For Illinois native plant enthusiasts, Oligoneuron rigidium is a dependable and visually striking choice for adding late-season color, pollinator support, and structural interest to native plantings. It is less aggressive than some other Goldenrod species and pairs beautifully with companions like Blazingstar, Little Bluestem, and Purple Coneflower in sunny, well-drained settings.
Oligoneuron rigidium, commonly known as Stiff Goldenrod, is a native perennial wildflower found in prairies, savannas, and open fields throughout Illinois. It thrives in full sun and well-drained to moderately dry soils, making it an excellent choice for dry prairie gardens and native landscape restorations.
This robust plant typically grows 2 to 5 feet tall and features thick, rough stems and large, leathery, gray-green leaves that are broad and oval-shaped—unlike the narrow leaves of many other goldenrods. In late summer to early fall, it produces flat-topped clusters of bright yellow flowers that are highly attractive to bees, butterflies, and other pollinators.
For Illinois native plant enthusiasts, Oligoneuron rigidium is a dependable and visually striking choice for adding late-season color, pollinator support, and structural interest to native plantings. It is less aggressive than some other Goldenrod species and pairs beautifully with companions like Blazingstar, Little Bluestem, and Purple Coneflower in sunny, well-drained settings.
Bloom: late summer to fall
Habitats: abandoned fields; clay prairies; limestone glades; moist to slightly dry black soil prairies; open areas along railroads (particularly where prairie remnants occur); roadsides; savannas; thickets
Lifespan: perennial
Moisture: moist to slightly dry
Plant type (height): forb (2 to 5 feet)
Requirements: full sun
Soil: clay-loam; gravelly material; loam
