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The Plant Guide

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Brown-eyed Susan

Rudbeckia triloba

rud-BEK-ee-ah try-LOW-bah Audio

This biennial makes a superb, self-sown companion in a mixed border or wild garden. It reaches up to 5 feet tall and exhibits a long-lasting, airy spray of small, daisy-like blossoms in yellow with purple-black centers. The flowers are beautiful 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 in spring.

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

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