Photo by: Shirley Denton, Suncoast Chapter FNPS
Photo by: Mark Hutchinson, Hernando Chapter, FNPS
Photo by: Mark Hutchinson, Hernando Chapter, FNPS
Photo by: Mark Hutchinson, Hernando Chapter, FNPS
Photo by: NULL

Nomenclature

Common Name:

starry rosinweed

Synonym(s):

Genus species:

Silphium asteriscus

Family:

Asteraceae (Compositae)

Plant Specifics

Form:

flower

Size:

2.0 to 5.0 ft tall by 1.0 to 2.0 ft wide

Life Span:

Long-lived perennial

Flower Color:

yellow

Fruit Color:

Phenology:

Dormant in cold areas but may grow year-round where warm.

Noted For:

Showy Flowers

Landscaping

Recommended Uses:

Wildflower garden.

Considerations:

Availability:

Native Nurseries, FNPS Plant Sales, Specialty Provider, Seed

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.

Light:

Full Sun, Part Sun

Moisture Tolerance:

Always Flooded------------------------------------------------Extremely Dry

Coming Soon!

Somewhat moist, no flooding ---to--- Somewhat long very dry periods

Salt Water Flooding Tolerance:

Unknown

Salt Spray/Salty Soil Tolerance:

Low/no tolerance of salty wind or direct salt spray

Soil or Other Substrate:

Sand, Loam

Soil pH:

5.1 to 7.6

Suitable to Grow In:

8A,8B,9A,9B,10A

Ecology

Wildlife:

Pollinators, Butterflies, Birds



  • Attracts butterflies


  • Attracts bees


Seeds eaten by birds.

Native Habitats:

Moist roadsides, flatwoods, sandhill, scrub.

Natural Range in Florida:

Comments:

Ethnobotany:

General Comments:

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