FNPS Plant Database

Helianthus radula

rayless sunflower

PHOTOS COMING SOON!

Nomenclature

Common Name:

rayless sunflower

Synonym(s):

Genus species:

Helianthus radula

Family:

Asteraceae (Compositae)

Plant Specifics

Form:

flower

Size:

very low basal rosette with a 2-2.5 ft flower stalk.

Life Span:

Long-lived perennial

Flower Color:

brown

Fruit Color:

brown

Phenology:

Noted For:

Showy Flowers

Landscaping

Recommended Uses:

Considerations:

Availability:

Native Nurseries, Seed

Propagation:

Seeds are available through the Florida Wildflowers Growers Cooperative.

Light:

Full Sun

Moisture Tolerance:

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

Coming Soon!

Usually moist, occasional inundation ---to--- Not wet but not extremely dry

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:

Suitable to Grow In:

8A,8B,9A,9B

USDA zones are based on the average annual extreme minimum winter temperature.



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Ecology

Wildlife:

Pollinators, Butterflies, Birds, Mammals

Attracts a variety of pollinators including bees.   Attracts butterflies.

Birds and small mammals eat the seeds.

Native Habitats:

Flatwoods. Moist to dry roadsides.

Natural Range in Florida:

Comments:

Ethnobotany:

General Comments:

Citations:

https://repository.si.edu/bitstream/handle/10088/5299/SCtZ-0310-Hi_res.pdf?sequence=1&isAllowed=y



Huegel, Craig, N.  2012.  Native wildflowers and other ground covers for Florida landscapes. University Press of Florida, Gainesville, FL..



Nelson, Gil.  2003.  Florida's Best Landscape Plants. Association of Florida Native Nurseries.



Wunderlin, R. P., B. F. Hansen, A. R. Franck, and F. B. Essig. 2021. Atlas of Florida Plants ( http://florida.plantatlas.usf.edu/).  Institute for Systematic Botany, University of South Florida, Tampa.

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