Rudbeckia triloba

Rudbeckia triloba [1] (browneyed susan, brown-eyed susan, thin-leaved coneflower, three-leaved coneflower) is a species of flowering plant in the sunflower family native to the United States. It is often seen in old fields or along roadsides. It is also cultivated as an ornamental.

Rudbeckia triloba
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Rudbeckia
Species:
R. triloba
Binomial name
Rudbeckia triloba

It is a short-lived herbaceous perennial found in the Central and Eastern United States. Height is 2–3 ft (60–90 cm) with a spread of 1.0 to 1.5 ft (30 to 45 cm). The species requires full sun and moist soil. It is easy to grow. Spent flowers should be removed to encourage additional bloom, prevent any unwanted self-seeding, or both. This species usually has smaller flowerheads, more flowerheads per plant, and fewer ray flowers per flowerhead than Rudbeckia hirta. Rudbeckia triloba basal leaves are often trifoliate (three leaflets, sometimes each of the three also divided).

In cultivation in the UK, Rudbeckia triloba has gained the Royal Horticultural Society’s Award of Garden Merit.[2][3]

See also

References
  1. "Rudbeckia triloba". Natural Resources Conservation Service PLANTS Database. USDA.
  2. "RHS Plantfinder - Rudbeckia triloba". Retrieved 11 October 2018.
  3. "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 93. Retrieved 11 October 2018.
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