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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minute“Black-eyed Susan” is the common name most closely associated with Rudbeckia hirta, a North American flower with yellow petals surrounding a dark center. The name’s visual meaning is clear; the identity of a person named Susan behind it is not. A 2024 WFIU Public Radio feature reports that no one has been able to identify the Susan in the name, so a specific namesake should be treated as unresolved.
Why is it called a black-eyed Susan?
The flower’s appearance offers the straightforward part of the explanation: its dark central disk stands out against bright yellow petals, resembling a dark “eye.” Penn State Extension describes this yellow-and-dark combination and notes that the common name is used for more than one plant.
The personal part of the story is less certain. WFIU Public Radio’s October 24, 2024 feature, “Our Native Rudbeckia”, says: “No one has been able to discover the identity of the Susan who gave her name to this easily grown garden perennial.” That is evidence that the namesake remains unidentified in the feature’s account—not proof that no explanation has ever existed. The safest answer to “Who was Susan?” is that her identity has not been established by the source.
What flower is a black-eyed Susan?
The name most often points to Rudbeckia hirta L., a species accepted by the Royal Botanic Gardens, Kew. Kew records “black-eyed Susan” among its common names and gives the plant’s native range as Central and Eastern Canada to the United States. Its botanical name was first published in 1753.
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Common names do not map neatly to a single species. Penn State Extension notes that Rudbeckia fulgida, as well as R. hirta, may be called black-eyed Susan. The name also appears in “black-eyed Susan vine,” which refers to the unrelated Thunbergia alata. When the precise plant matters, use its botanical name rather than relying on the common name alone.
Does the name mean the same plant everywhere?
No. A common name can cover different species, and the plant associated with it can vary by region. The University of Maryland Extension identifies R. hirta var. pulcherrima as the common black-eyed Susan across Maryland. It describes that variety as likely to occur in disturbed places such as roadsides and old fields, while another variety is associated with undisturbed soils farther west.
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Those Maryland observations are regional, not a universal description of every black-eyed Susan. For species-specific identification or planting decisions, check local guidance and identify the plant by its botanical name and, where relevant, variety. The University of Maryland Extension page, updated March 6, 2023, cautions: “It is surprising how little is known about Maryland’s state flower and how much inaccurate information you will find both online and in literature about gardening with it.” The context is Maryland’s state flower, not every plant sold under the common name.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why the plant matters beyond its name
The USDA Natural Resources Conservation Service’s Black eyed Susan (Rudbeckia hirta) Plant Guide describes ecological and historical associations for the species. It reports that bees collect pollen and nectar from the flowers, identifies the silvery checkerspot and bordered patch among butterflies associated with the plant, and notes that quail, turkey, and songbirds eat its seeds.
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The same guide reports Indigenous ethnobotanical uses and dye production from the blooms. These are historical accounts attributed to the guide and its references; they should not be read as evidence that all Indigenous communities used the plant in the same way or as current medical advice.
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