Rudbeckia hirta 'Sonora'
Black-Eyed Susan
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Black-Eyed Susan (Rudbeckia hirta 'Sonora') - Description
Radiant gold, 5-6in. flowers, with an inside ring of mahogany around dark centers, grow on compact plants from early summer until frost. Annual. Ht.18in. GARDEN HINTS: In mild climates, sow seeds outdoors 1/4in deep any time of the year.
Black-Eyed Susan (Rudbeckia hirta 'Sonora') - Blooming
Blooms daisy-like flowerheads with conical centers between summer and fall. The florets are often reflexed, and mainly exhibit shades of yellow and orange-red.
Black-Eyed Susan (Rudbeckia hirta 'Sonora') - Growth
Annuals, biennials, and perennials. Rudbeckias do well in full sun or partial shade. The flowers of most species of Rudbeckia are suitable for cutting. Rudbeckia also works well in a border, or naturalized into a meadow or woodland garden. R. hirta is particularly nice as an annual for bedding or borders.
Black-Eyed Susan (Rudbeckia hirta 'Sonora') - Planting
Sow perennial seeds in containers in a cold frame in fall or spring. Divide perennials in fall or spring. Sow annual and biennial seeds at 61-64°F (16-18°C) in spring.
Black-Eyed Susan (Rudbeckia hirta 'Sonora') - Pest
Slugs and snails are a threat to young growth. Rudbeckia is also prone to aphids, powdery mildew, leaf spots, rust, and smut.
Black-Eyed Susan (Rudbeckia hirta 'Sonora') - Interesting facts
Rudbeckia is native to North America. There are 20 known species. They are called coneflowers, because of their conical centers that can be black, brown, or green.
Black-Eyed Susan (Rudbeckia hirta 'Sonora') - Soil and irrigation
Rudbeckias prefer moderately rich, heavy, well-drained soils that do not dry out. R. fulgida var. deamii tolerates dry conditions the best compared to other species.
