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Vernonia lettermannii

Common name ironweed
Family asteraceae
Life cycle perennial (Z4-9)
Flowers purple (August-September)
Size 24"
Light sun
Cultural notes drought-tolerant

Wildflower from the central United States. Unlike other more upright ironweeds I've grown, this one grows into a rounded mound of thread-leaved foliage, which is covered in purple flowers in late summer.

We left this plant behind in our Pennsylvania garden (and wish it well); we don't grow it in Houston.

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PlantLinks to other web pages about Vernonia lettermannii

Seed-starting details for this plant

  1. -2008 Several attempts to grow from traded and society exchange seeds, with various lengths of cold treatment. Not a single seedling
  2. Seed from '12 gardener gift. Baggy 35F (12w) - 70F (26%G, 4-10d).
    Baggy 70F (3w) - 35F (11w) - 70F (3%G, 4d)

Fresh seed and a lengthy cold treatment appears to be required for seed to germinate.

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