84-98 days. Black-Eyed Susan seeds grow some of the season's most timeless and familiar blooms of varieties native to the United States. Black-Eyed Susan rudbeckias are hardy outdoor favorites for growing unique, yet brilliant color for lining the back of the garden or showing off on the patio. Black-Eyed Susan seeds grow classic 12-36" rudbeckias bursting with neat 2½" blooms of delicate daisy-like golden yellow petals around a smokey chocolate center. Black-Eyed Susan is easy to grow from seed and known to thrive in a variety of gardens prone to heat, drought, and poor soil across North America.
Growing Black-Eyed Susan Rudbeckia Garden Seeds
Black-Eyed Susan is easy to grow from seed and recommended for direct sowing outdoors after the frost. Rudbeckia has a wildflower habit and most commonly sown by broadcasting. Blend rudbeckia seeds with sand to increase visibility during sowing. Broadcast the mix over a 10-square foot area and evenly rake and lightly tamp into moist, Organically rich, and well-drained soil in full sun. Black-Eyed Susan can be susceptible to downy and powdery mildew. Cut back spent foliage, leaves, and blooms after flowering to prolong vitality into the fall and Black-Eyed Susan seeds will benefit from partial shade during severe summers. Rudbeckia has no serious pests or diseases, but monitor for slugs and snails on young plants. Black-Eyed Susan seeds mature in 84-98 days as 12-36" tall bushy uprights with 12-24" spreads covered in 2½" daisy-like blooms with golden petals surrounding a chocolate center.
Rudbeckia hirta is native to the eastern and midwestern United States. The genus Rudbeckia honors pioneering Swedish botanist Olof Rudbeck, who established the world-renowned Uppsala Botanic Garden that employed the "father of modern taxonomy" Carl Linnaeus as a resident professor. The species name hirta literally translates to "hairy," referencing the tiny bristles covering the entire plant.
Basic Info
Color: | Golden yellow petals around a smokey chocolate center |
Growing Info
Days to Maturity: | 84 - 98 days |
Hardiness Zone: | 3 - 9 |
Planting Depth: | Plant 3-4 seeds ¼" deep or broadcast directly |
Plant Spacing: | 12 - 24 inches |
Growth Habit: | 12-36" tall bushy upright 12-24" wide covered in 2½" daisy-like blooms |
Soil Preference: | Moist, Organically rich, well-drained |
Light Preference: | Full sun |
Other Info
Taxonomy: Rudbeckia hirta : | |
Seed Type: | Perennial |
Sow Indoors or Outdoors: | Black-Eyed Susan is easy to grow from seed and recommended for direct sowing outdoors after the frost. Rudbeckia has a wildflower habit and most commonly sown by broadcasting. Blend rudbeckia seeds with sand to increase visibility during sowing. Broadcast the mix over a 10-square foot area and evenly rake and lightly tamp into soil. |
Diseases/Pests/Troubleshooting: | Black-Eyed Susan can be susceptible to downy and powdery mildew. Cut back spent foliage, leaves, and blooms after flowering to prolong vitality into the fall. Rudbeckias will benefit from partial shade during severe summers. |
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