Threadleaf Ironweed
Vernonia lettermannii
A fine, threadleaf ironweed forming a soft mound topped with clusters of vivid violet flowers in late summer. The compact, mildew-free 'Iron Butterfly' selection comes from this Ozark species.
- Family
- Asteraceae
- Type
- wildflower
- Lifespan
- perennial
- Height
- 2–3.5 ft
- Spacing
- 2–3 ft apart
- Light
- sun, part shade
- Soil moisture
- moist, dry
- Soil pH
- neutral
- Bloom
- July, August
- Bloom colors
- purple
- Wildlife value
- pollinators, butterflies, hummingbirds
- Landscape uses
- border, naturalizing, rain garden
- Native states
- AR, OK
Related native plants
More Vernonia species
- Western Ironweed (Vernonia baldwinii)
- Giant Ironweed (Vernonia gigantea)
- New York Ironweed (Vernonia noveboracensis)
- Prairie Ironweed (Vernonia fasciculata)
- Woolly Ironweed (Vernonia lindheimeri)
- Tall Ironweed (Vernonia angustifolia)