Helianthus angustifolius

Photo by Shirley Denton. Photograph belongs to the photographer who allows use for FNPS purposes only. Please contact the photographer for all other uses.

Natural Range in Florida
USDA Zones

Suitable to grow in:
10A 8A 8B 9A 9B 

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Swamp Sunflower; Narrow-leaved Sunflower

Asteraceae (Compositae)

Plant Specifics

Size:5-8 ft
Life Span:Short-lived perennial
Flower Color:Yellow
Phenology:Winter dormant. Blooms in fall.
Habitats:Flatwoods, marsh edges, cutthroat seep.


Recommended Uses:Plant as a buffer along the edge of wetlands, in a swale, or any other open wet site. Forms clones of plants up to 6 ft wide.
Light: Full Sun
Moisture Tolerance:
always floodedextremely dry
Moisture Tolerance: Stays Wet ----- to ----- Usually moist, occasional inundation
Salt Water Flooding Tolerance:Not salt tolerant of inundation by salty or brackish water.
Salt Spray Tolerance:Some tolerance to salty wind but not direct salt spray.
Soil/Substrate:Loam, Sand



Birds and small mammals eat the seeds.

Primarily pollinated by bees.  The goldenrod soldier beetle (a.k.a. leatherwing beetle(, Chauliognathus pensylvanicus is a goldenrod pollinator (FL Wildflower Foundation).