Plant types and subtypes: Perennials
Light Requirements: sun
Water Use: medium
Soil Moisture: dry, moist
Soil Description: acid, neutral, average, poor, loam, clay, sand, gravel/rock
Bloom Time: August, September, October
Bloom Color: yellow
Leaf Color: green
Hardiness Zone: 3, 4, 5, 6, 7, 8
Additional Tags: attracts bees, attracts birds, attracts butterflies, clumping, colonizing, cottage garden plant, drought tolerant, naturalizing, rock garden plant
Pricing & Availability
Oligoneuron rigidumAlso known as:
Oligoneuron rigidum is a medium-sized goldenrod that typically grows between 1' to 5' tall. It is one of the showier species of the genus (formerly classified as Solidago) with dense clusters of yellow, mildly fragrant flowers appearing at the ends of terminally branched stems. It has distinctive foliage with large, stiff, hairy basal leaves. Their form can vary depending on growing conditions; they can be lance-shaped, oblong or oval, with smooth margins or slightly serrated.
Stiff goldenrod is native to open prairies and prefers a location in full sun. It is not particular about soil, so long as it be well-drained. Overly fertile soil will produce weaker plants that will tend to flop over under the weight of the flower heads. It is not particularly susceptible to powdery mildew, but good air circulation is recommended to minimize the risk, especially under more humid conditions. Pinching the stems early in their growing season will encourage a denser and bushier appearance. It has a month long flowering period that can be further extended by deadheading spent flowers. It is deep-rooted and fairly drought tolerant within its natural range. It can spread rather aggressively, both by means of rhizomes and by seed. Dividing mature clumps every 2-3 years will help control unwanted spread, and ensure healthier plants. Bloom times are from August to October. Zones 3-8
Easily propagated by clump division in early spring, or by seed.
This an overall very attractive and easy plant to grow. It can provide a stunning presence in cottage gardens, rock gardens, perennial flower borders, or naturalized areas. This goldenrod is one of several species formerly placed in the Solidago genus, and recently reassigned to the Oligoneuron genus.
Native Range & Classification
Recorded County Distribution: USDA data
AL, AR, CO, CT, DC, GA, IA, IL, IN, KS, KY, LA, MA, MD, MI, MN, MO, MS, MT, NC, ND, NE, NJ, NM, NY, OH, OK, PA, RI, SC, SD, TN, TX, VA, WI, WV, WY
|Species||Oligoneuron rigidum||stiff goldenrod|