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Wholeleaf Rosinweed

Silphium integrifolium

Wholeleaf rosinweed is a sturdy prairie sunflower-relative with bright yellow daisies on rough, unbranched stems, a long-lived nectar plant whose seeds feed finches. Its oil-rich seed is under development at the Land Institute as a modern perennial oilseed crop.

Family

Asteraceae

Type

wildflower

Lifespan

perennial

Height

2–6 ft

Spacing

1–3 ft apart

Light

sun

Soil moisture

dry, moist

Soil pH

neutral

Bloom

July, August, September

Bloom colors

yellow

Wildlife value

butterflies, songbirds

Landscape uses

naturalizing

Native states

AL, AR, CO, IA, IL, IN, KS, KY, LA, MI, MO, MS, NE, NM, OH, OK, SD, TN, TX, WI, WY