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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.

In our garden, this plant grows in the following areas: back yard island, bogside border, side garden, sale plot

About my plant portraits
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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Last modified: April 11, 2013
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