Oligoneuron rigidum – Stiff goldenrod

Oligoneuron rigidum Stiff Goldenrod (F,DM,A,A)

3 – 5 ft H x 2 – 3 ft W. Flat-topped yellow flower clusters in late summer. Multi-stemmed with long basal leaves and progressively shorter lanced shaped leaves near the crown. Hairy leaves (pubescent) feel velvety to the touch and have a nice sheen. Leaves may turn red in fall (tbd). Originally part of the Solidago genus (Solidago rigida).

  • Blooms:  Early fall, late summer (F)
  • Moisture: Dry to Medium  (DM)
  • Soil Type: All soil types (A) Clay, loam or sand
  • Range: Native Adjacent (A) – Found in taller prairies of Kansas and east.
  • Sun: Full sun

Family: Asteraceae

In my Garden:

Late July side shoots begin to form at the crown.

Stiff goldenrod is a tall fall blooming plant with nice structure. It provides late fall foraging for Monarch butterflies on their way south and the seed heads are eaten by birds. The bloom time will coincide with the smooth aster to create a yellow and purple fall.

Though this variety is not native to Colorado, a smaller version is and I hope to grow this one without trouble. Its a backdrop plant in the prairie and will provide winter interest with its stout stems and flat seed heads. In its second year it stands at the back of the prairie garden a whopping 5 feet tall and no flower heads yet to be seen.

July 2022 Second year plant at 5 feet tall.

Propagation via seed

This variety is said to easily propagate from seed when sown in Fall. I purchased my plants from Prairie Moon Nursery as a small potted plant.

Plants in first year only grow below ground and you will not see the tall stems until the second year.

Role in Ecosystem

Host Plant to : Twirler Moth species and the Marked Tricholita moth. Many insects are attracted to the flower’s nectar especially monarchs.

USDA Site

Other native goldenrod to look for: Solidago canadensis, Solidago missouriensis, Solidago nemoralis

https://www.prairienursery.com/stiff-goldenrod-solidago-rigida.html

An amateur gardener who loves to watch the garden grow.