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Black-eyed Susan / Botanical name: Rudbeckia
hirta Description: Black-eyed Susan is a member of the Aster (Asteraceae) family. The plants can grow up to 4 feet tall but are typically 1 to 2 feet tall and havebristly-hairy leaves and stems. Flower heads are single at the top of each stem branch, with each head about 2 to 3 inches wide and composed of a dark brown to purple conical central disk surrounded by 10 - 20 yellow petals. Black-eyed Susans contribute a valuable nectar source for butterflies, moths, bees, flies and various beetles. Blooms - Late spring through midsummer. |
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An upright annual or shortlived perennial native to the eastern United
States, endemic throughout North America. The Black-Eyed Susan is
probably the most common of all American wildflowers. The characteristic
brown, domed center is surrounded by bright orange/yellow ray florets.
Thrives in most soils in full sun. Height: 2-3 feet / Germination: 7-30 days / Optimum soil temperature for germination: 70F Sowing depth: 1/16" / Blooming period: June-August / Average seeds per pound: 1,710,000 Seeding rate: 2 lbs. per acre / Suggested use: Roadsides, open fields, floral gardens, mixtures. Miscellaneous: The state flower of Maryland. When cut, has a vase life of 6 to 10 days. Reseeds. |
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