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Rudbeckia hirta (Black-eyed Susan, Gloriosa daisy, Coneflower)

Rudbeckia hirta Rudbeckia hirta 'Toto' Photo/Illustration: Courtesy of White Flower Farm


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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Rudbeckia hirta rud-BEK-ee-ah HER-tah Common Name: Black-eyed Susan, Gloriosa daisy, Coneflower Synonyms: R. gloriosa Genus: Rudbeckia
This biennial or short-lived perennial has given rise to numerous cultivars which are often grown as annuals. From summer into early autumn, it bears daisy-like blossoms (to 3 inches across) with light or deep yellow rays and brownish-purple centers. The flowers are a staple in late summer bouquets.
 Noteworthy characteristics: Rudbeckias hail from the moist meadows and dappled woods of North America. They are suitable for mixed borders, meadows, native gardens, open woods, and large annual displays. 
 Care: Grow in average, slightly heavy but well-drained soil in full sun to partial shade.
 Propagation: Sow seeds of annuals and biennials in spring; sow perennial seeds in a cold frame in early spring, or divide plants in spring or fall.
 Problems: Aphids, powdery mildew, smut, rust, Ramularia and Septoria leaf spots, snails, slugs.
Height 1 ft. to 3 ft.
Spread 1 ft. to 3 ft.
Growth Habit Clumps
Growth Pace Fast Grower
Light Full Sun to Part Shade
Moisture Medium Moisture
Maintenance Low
Characteristics Attracts Birds; Attracts Butterflies; Native; Self Seeds; Showy Flowers; Showy Seed Heads
Bloom Time Early Fall; Late Summer; Summer
Flower Color Brown Flower; Orange/ Salmon Flower; Red Flower; Yellow Flower
Uses Beds and Borders, Cut Flower, Hedge, Naturalizing, Roadside, Suitable as Annual, Meadow Garden
Style Cottage Garden
Seasonal Interest Summer Interest, Fall Interest
Type Perennials

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