Vernonia gigantea

Photo by Roger Hammer. 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 10B 8A 8B 9A 9B 

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Tall Ironweed

Asteraceae (Compositae)

Plant Specifics

Size:4-6 ft
Life Span:Long-lived perennial
Flower Color:Purple
Phenology:Winter dormant
Habitats:Exposed sand and gravel bars of streams during low water, stream banks, hydric to wet mesic pine flatwoods. Rich soils. Ruderal.


Recommended Uses:Back of a moist wildflower garden. Can also use on the edges of natural or created wetlands and streams.
Light: Full Sun,  Part Shade
Moisture Tolerance:
always floodedextremely dry
Moisture Tolerance: Usually moist, occasional inundation ----- to ----- Not wet but not extremely dry
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



Nectar attracts butterflies and native beens. 

Larval host for spring azure butterfly.