Helianthus pauciflorus

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Helianthus Pauciflorus 8 Helianthus Pauciflorus 5 Helianthus Pauciflorus 6 Helianthus Pauciflorus Helianthus Pauciflorus 1
Helianthus Pauciflorus 8 Helianthus Pauciflorus 5 Helianthus Pauciflorus 6 Helianthus Pauciflorus Helianthus Pauciflorus 1

Helianthus pauciflorus

Common Name: Stiff Sunflower

Stiff Sunflower is a perennial that grows 2 to 6 feet tall, producing bright yellow flowers with a dark central disk from mid to late summer. It thrives in dry to mesic prairies, roadsides, and open fields, preferring well-drained soils. This species is highly attractive to pollinators, including bees and butterflies. Its deep roots make it a great choice for erosion control in native plantings and prairie restorations.

Characteristics

Product Form Plant, Seed
Type Forb
Sun Full Sun, Partial Sun
Soil Loam, Sand/Gravel, Calcareous
Moisture Dry, Mesic, Wet
Average Max Height (inches) 45
Suggested Plant Spacing (inches) 30
Bloom month(s) July, August, September
Bloom Color or Type Yellow
Dominance High

Range Maps

Sowing Information

For most homeowners, the recommended method is to hand-broadcast seed at a minimum rate of 16–64 PLS (Pure Live Seed) ounces per acre. To ensure even coverage, broadcast the seed in perpendicular passes across the site. Grass seed should be broadcast first and lightly raked into the soil. Afterward, apply a light mulch layer using clean, seed-free straw or, preferably, our native Little Bluestem straw, available at our retail garden centers. Once mulching is complete, broadcast native wildflower seed over the area without raking it in. A good rainfall or thorough watering will provide sufficient soil contact for successful germination.

Planting Information

Dig a hole in your planting site slightly larger than the plant’s root system. When placing the plant into the hole, ensure that the soil line remains consistent with its original level in the pot. Fill in around the roots with the excavated soil, gently firming it to eliminate air pockets. Water the plant thoroughly the same day to promote successful establishment.