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The Plant Guide

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Sweet coneflower

Rudbeckia subtomentosa

rud-BEK-ee-ah sub-toe-men-TOE-sah
Rudbeckia subtomentosa 'Henry Eilers'

This dignified U.S. native species has downy leaves and bears clusters of luminous clear-yellow flowers with reddish-brown center cones. It blooms for over a month starting in mid- to late-summer.

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 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 Width : 1 to 3 feet
  • Plant Height : 3 to 6 feet
  • Zones : 4, 5, 6, 7, 8
  • Characteristics : Fragrant Flowers
  • Light : Full Sun to Partial Shade
  • Maintenance : Low
  • Moisture : Medium Moisture
  • Growth Rate : Moderate
  • Plant Type : Perennials
  • Bloom Time : Summer
  • Plant Seasonal Interest : Summer Interest
  • Flower Color : Yellow

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