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The Plant Guide

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Black-eyed Susan

Rudbeckia hirta

rud-BEK-ee-ah HER-tah Audio
Rudbeckia hirta 'Toto'

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 CharacteristicsRudbeckias 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. 

CareGrow in average, slightly heavy but well-drained soil in full sun to partial shade.

PropagationSow seeds of annuals and biennials in spring; sow perennial seeds in a cold frame in early spring, or divide plants in spring or fall.

ProblemsAphids, powdery mildew, smut, rust, Ramularia and Septoria leaf spots, snails, slugs.

  • Genus : Rudbeckia
  • Plant Height : 1 to 3 feet
  • Plant Width : 1 to 3 feet
  • Zones : 3, 4, 5, 6, 7
  • Bloom Time : Early Fall, Late Summer, Summer
  • Growth Rate : Fast
  • Light : Full Sun to Partial Shade
  • Maintenance : Low
  • Moisture : Medium Moisture
  • Plant Type : Perennials
  • Flower Color : Red, Yellow
  • Characteristics : Self Seeds, Showy Seed Heads
  • Plant Seasonal Interest : Summer Interest
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