Starry rosinweed (Silphium asteriscus)
Click on terms for botanical definitions.
Starry rosinweed is a tall perennial that produces showy blooms comprised of bright yellow ray florets surrounding yellow to green disk florets. Flowerheads are supported by an involucre of large bracts. Leaves have a rough surface, toothed margins, and are arranged opposite to alternate. Seeds are borne in winged achenes.
This robust wildflower is typically found in pine flatwoods, sandhills, open woodlands, mixed upland forests and disturbed or ruderal areas.
Family: Asteraceae (Aster, daisy or composite family)
Native range: Panhandle, and south along western portion of state
To see where natural populations of starry rosinweed have been vouchered, visit www.florida.plantatlas.usf.edu.
Soil: Slightly moist to dry, sandy or loamy soils
Exposure: Full sun to partial shade
Growth habit: 3-4’ tall
Garden tips: Starry rosinweed can produce flowers from spring well into the fall season. It attracts a variety of butterflies, bees and other pollinators and is a striking addition to any wildflower garden. It is a prolific seeder and will typically self-seed if allowed, although seed collection is also easy (simply remove the dried, dead flower heads).
Starry rosinweed is often available at nurseries that specialize in native plants. Visit PlantRealFlorida.org to find a native nursery on your area. Seeds are also available through the Florida Wildflowers Growers Cooperative.