• Rudbeckia hirta
  • Biennial
  • Zones 3–8
  • Yellow
  • Single

Rudbeckia hirta

black-eyed Susan

Biennial rudbeckia hirta black-eyed Susan in yellow and orange, blooming in early summer, midsummer, and late summer. Daisy-like flowers with yellow to orange-yellow rays around a dark brown center. USDA zones 3–8.

Cross-referenced · 3 sources

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A Rudbeckia hirta black-eyed Susan flower up close on the plant
A Rudbeckia hirta black-eyed Susan flower up close on the plant

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Rudbeckia hirta black-eyed Susan plants in bloom in a garden
Rudbeckia hirta black-eyed Susan plants in bloom in a garden

At a glance

Flower form
Rudbeckia hirta Single
Colors
  • Yellow
  • Orange
Blend
Blooms
Early summer, Midsummer, Late summer
Vase life
Not grown for cutting
Height
2–3 ft (61–91 cm) Spread: 1–2 ft (30–61 cm)
Sunlight
Full sun
Hardiness
USDA zones 3–8 Biennial
Planted as
Seed
Botanical name
Rudbeckia hirta

In the garden

  • Butterflies
  • Seldom severely damaged by deer (Rutgers rating)

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Origin

Native wildflower of the central United States; Missouri Botanical Garden describes it as an annual, biennial or short-lived perennial that blooms the first year from spring-sown seed.

Sources

Where to buy

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All photos

  • A Rudbeckia hirta black-eyed Susan flower up close on the plant
    A Rudbeckia hirta black-eyed Susan flower up close on the plant
  • Rudbeckia hirta black-eyed Susan plants in bloom in a garden
    Rudbeckia hirta black-eyed Susan plants in bloom in a garden

Questions

Is Rudbeckia hirta hardy in my zone?

Rudbeckia hirta survives winter in the ground in USDA zones 3 to 8. In colder zones treat it as an annual or lift it before the ground freezes.

Does Rudbeckia hirta need full sun?

Rudbeckia hirta grows in full sun.

When does Rudbeckia hirta bloom?

Rudbeckia hirta blooms in early summer, midsummer, and late summer.

Is Rudbeckia hirta good for cutting?

Our sources don't list Rudbeckia hirta as a cut flower or give a vase life for it.