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Helianthus debilis Nutt.
East Coast dune sunflower

Family: Asteraceae

Group: Dicot

Substrate: Terrestrial

Habit: Herb

Perennation: Short Lived Perennial

Native Range: Eastern peninsular Florida and southeastern Georgia; doubtfully native to the Monroe County Keys.

SOUTH FLORIDA Occurrence: Present

SOUTH FLORIDA Native Status: Native

IRC SOUTH FLORIDA Status: Secure

SOUTH FLORIDA Cultivated Status: Cultivated

Comments: Visit our Natives For Your Neighborhood website for more information and images.

Helianthus debilis
Copyright by: Roger L. Hammer

Other data on Helianthus debilis available from :
Atlas of Florida Vascular Plants
Helianthus debilis has been found in the following 31 conservation areas :
Occurrence Native Status
Bill Baggs Cape Florida State Park Present Native
Biscayne National Park Present Not Native, Naturalized
Blowing Rocks Preserve Present Native
Crandon Park Present Native
Dolphin Center STD: Scrub Oak Preserve Present Not Native, Naturalized
Frenchman's Forest Natural Area Present Not Native, Naturalized
Gasparilla Island State Park Present Native
Gomez Present Native
Hobe Sound National Wildlife Refuge Present Native
Hollywood North Beach Regional Park Present Native
Hugh Taylor Birch State Park Present Native
J.N. 'Ding' Darling National Wildlife Refuge Present Not Native, Cultivated Only
John D. MacArthur Beach State Park Present Native
John U. Lloyd Beach State Park Present Native
Jonathan Dickinson State Park Present Native
Juno Dunes Natural Area Present Native
Jupiter Ridge Natural Area Present Native
Loggerhead Park Present Native
Matheson Hammock Park Present Native
Muscara Present Native
Ocean Ridge Hammock Park Present Native
Oleta River State Park Present Native
Radnor Beach Park Present Native
Red Reef Park Present Native
Seabranch Preserve State Park Present Native
Seacrest Scrub Natural Area Present Native
Six Mile Cypress Slough Preserve Present Native
South Beach Park Present Native
St. Lucie Inlet Preserve State Park Present Native
Twin Rivers Present Native
Virginia Key and Marine Stadium Present Native


Helianthus debilis has been found in the following 4 counties :
Occurrence Native Status
Broward County Native
Martin County Native
Miami-Dade County Native
Palm Beach County Native


Helianthus debilis has been found in the following 4 habitats :
Beach Dune
Coastal Strand
Disturbed Upland
Scrubby Flatwoods


All Images:

Helianthus debilis
Copyright by: Roger L. Hammer
Helianthus debilis
Copyright by: George D. Gann

Helianthus debilis
Copyright by: Keith A. Bradley