• Starry Rosinweed (Silphium astericus)(Florida Native) - Whitwam Organics
  • Starry Rosinweed (Silphium astericus)(Florida Native) - Whitwam Organics
1 2

Whitwam Organics

Starry Rosinweed(Silphium astericus) (Florida Native)

Starry Rosinweed(Silphium astericus) (Florida Native)

$7.97 USD
$7.97 USD
Sale Sold out
Shipping calculated at checkout.
Seeds or Plants
Size

Silphium astericus

This pretty wildflower is a Florida native of the flatwoods and sandhills. Displaying bright yellow flowers up to 2 ½ inches in diameter and the plant itself can reach 2-5 feet tall. In the Asteraceae family, the same family as daisies, this flower dies back in the winter, but will persist in a warmer climate. A prolific seed producer, it reseeds after the seed heads drop, and will also spread through rhizomes. With edible stems, Native Americans chewed on them to clean their teeth. The plants prefer dry to moist well-draining soil and will make a perfect colorful addition to any garden.

Days to germination 7 - 21 days
Days to maturity 35 - 63 days
Life cycle Short-lived perennial
Bloom time

Spring, Summer, and Fall
Spacing 12"-24"
Sun full sun, part shade
Soil moist to very dry
Optimum soil P.H 5.1-7.6
Height 2ft-5ft

 

View full details

Shop Plants & Seeds

Over 800 5-Star Google Reviews

  • “All items arrived quickly and well packaged. I usually expect to have one or two live items out of a batch, but they are all thriving. I couldn’t be happier!”

    David L.
    August 2026

  • “My live plants were packed like they belonged in Ft Knox. 😂 They really were packed beautifully. Only one plant, a bee balm, is questionable but signs that it will recover are happening. All in all I am thrilled with my plants and seeds. Some of my coreopsis have already sprouted!”

    Jacquie R.
    September 2026

  • “Plants were ready quick at a good price with great packaging. Very happy with my purchase.”

    Will B.
    May 2026

  • “I’ve ordered seeds from Whitwam Organics 3 or 4 times now. I love the simple packaging, clear planting guidelines, and variety they offer. Great germination rates!! The bare root plants I’ve ordered have come healthy, so healthy that the wild rabbits always approve of my menu upgrades! 😂🐰”

    Chanda B.
    August 2026
1 4