Stiff Sunflower
Helianthus pauciflorus
Last reviewed: September 2026
Helianthus pauciflorus, or stiff sunflower, blooms from July through September and produces bright yellow flowerheads in dry, sunny prairies and meadows across the central and eastern United States.
Toxicity unknown
Stiff Sunflower (Helianthus pauciflorus) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
24"–60" H × 12"–24" W
Bloom
Jul, Aug, Sep
Native to
AR, CO, CT, GA and 25 more states
Pollinators
bees, butterflies, beetles
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.
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Stiff sunflower is a hardy native perennial that produces bright yellow daisy-like flowers from summer through early fall. It forms upright clumps that can spread moderately over time, creating naturalistic drifts in sunny gardens. The plant goes dormant in winter, leaving brown stems that can be cut back in late fall or early spring.
Growing Stiff Sunflower
Grow Stiff Sunflower in full sun and low water. Mature plants reach 24 to 60 inches tall and spread 12 to 24 inches wide. Expect moderate maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Stiff Sunflower is an HOA-friendly choice in the right placement. Maintenance level: moderate. Tidiness: 2 out of 5.
Works well in: mid zone, backyard only.
- Can look weedy when dormant
- May spread beyond original planting area
- Tall growth might appear too informal for formal landscapes
Wildlife value
This sunflower is excellent for pollinators, attracting native bees, butterflies, and beneficial beetles throughout its long bloom period. The seeds also provide food for birds like goldfinches in fall and winter.
Common questions
- When does stiff sunflower bloom?
- Stiff sunflower typically blooms from July through September, producing bright yellow flowerheads on sturdy, upright stems.
- What pollinators visit stiff sunflower?
- Bees, butterflies, and beetles commonly visit the flowers of stiff sunflower for nectar and pollen during its summer bloom period.
- How much sun and water does stiff sunflower need?
- It grows best in full sun with well-drained soil and tolerates low-water conditions once its root system is established.
- Is stiff sunflower a good choice for a dry, sunny garden bed?
- Yes. It handles low-water, sunny sites well and is often used in prairie plantings and meadow restorations where moisture is limited.
- Is Stiff Sunflower HOA-friendly?
- Stiff Sunflower is generally an HOA-friendly choice in the right placement, with moderate maintenance.
These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Stiff Sunflower? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Planning a bed around it? Start a free plan with this plant
Not sure where to start? Take the 2-minute yard quiz