Silphium asteriscus

Starry Rosinweed

Asteraceae (Compositae)

Plant Specifics

Form:	Flower
Size:	2.0 to 5.0 ft tall by 1.0 to 2.0 ft wide
Life Span:	Short-lived perennial
Flower Color:	Yellow
Phenology:	Dormant in cold areas but may grow year-round where warm.
Noted for:	Showy flowers

Landscaping

Recommended Uses:	Wildflower garden.
Propagation:	Starry rosinweed will readily self-seed if left to its own devices. Collecting seeds is a simple matter of removing the dead head flowers once they are thoroughly dried on the plant. Store the seeds at room temperature and plant in late winter or early spring. Seeds are available through the Florida Wildflowers Growers Cooperative. Silphium asteriscus also propagates by rhizome, so root cuttings are a possibility.
Availability:	Native nurseries, FNPS plant sales, Seed, Specialty providers
Light:	Full Sun,  Part Shade
Moisture Tolerance:	always floodedextremely dry
	(Somewhat moist, no flooding ----- to ----- Somewhat long very dry periods)
Moisture Tolerance:	Somewhat moist, no flooding ----- to ----- Somewhat long very dry periods
Salt Water Flooding Tolerance:	Not salt tolerant of inundation by salty or brackish water.
Salt Spray/ Salty Soil Tolerance:	Low/no tolerance of salty wind or direct salt spray
Soil or other substrate:	Loam, Sand
Soil pH:	5.1 to 7.6

Ecology

Wildlife:	Seeds eaten by birds.
Insects:	Attracts butterflies Attracts bees
Native Habitats:	Moist roadsides, flatwoods, sandhill, scrub.

Distribution and Planting Zones

Comments

General Comments:

The bloom period is relatively long - lasting from early spring, well into fall.