FNPS Plant Database
Rudbeckia laciniata
Nomenclature
Common Name:
Synonym(s):
Genus species:
Family:
Asteraceae
Plant Specifics
Form:
Size:
Life Span:
Long-lived perennial
Flower Color:
Fruit Color:
Phenology:
Noted For:
Landscaping
Recommended Uses:
Considerations:
Availability:
Propagation:
Light:
Moisture Tolerance:
Always Flooded---------------------------------Extremely Dry
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Usually moist, occasional inundation -to- Not wet but not extremely dry
Salt Water Flooding Tolerance:
Unknown
Salt Spray/Salty Soil Tolerance:
Some tolerance to salty wind but not direct salt spray
Soil or Other Substrate:
Sand, Loam
Soil pH:
Suitable to Grow In:
8A,8B
USDA zones are based on the average annual extreme minimum winter temperature.
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Vouchered In:
Ecology
Wildlife:
- Attracts bumble bees, butterflies
- Larval host for the silvery checkerspot, found only in extreme north Florida.
Seeds eaten by small birds such as finches.
Native Habitats:
Comments:
Ethnobotany:
General Comments:
Very robust. Forms large patches. Given its potential to be very tall, it may needs to have support from adjacent plants.
Data on salt tolerance comes mostly from northern sources where the source of salt is winter road de-icing.
Citations:
Brakie, M. (2019). Plant Guide for Black-eyed Susan ( Rudbeckia hirta ). ( ). Accessed 2026. USDA-Natural Resources Conservation Service, East Texas Plant Materials Center. Nacogdoches, TX.
Huegel, Craig N. (2012). Native Wildflowers and Other Ground Covers for Florida Landscapes. University Press of Florida, Gainesville.
Butterflies and Moths of North America (BAMONA). (Undated). Silvery Checkerspot, Chlosyne nycteis [in] Butterflies and Moths of North America. ( https://www.butterfliesandmoths.org/species/Chlosyne-nycteis ). Accessed 2026.
Horth, L., Campbell, L., & Bray, R. (2014). Wild bees preferentially visit Rudbeckia flower heads with exaggerated ultraviolet absorbing floral guides. Biology open, 3(3), 221–230. ( https://doi.org/10.1242/bio.20146445 ). Accessed 2026. National Library of Medicine, Bethesda, MD.
University of Minnesota. (Undated). Black Eyed Susan [in] Plants for Pollinators. ( https://plantsforpollinators.weebly.com/black-eyed-susan.html ). Accessed 2026. University of Minnesota, St. Paul, MN.
