Quick answer: Prairie ironweed (Vernonia fasciculata) is native to 7 states. What's commonly sold under this name is the true wild species. It's typically seeds, verified 16 Sep 2026.
Where it's native
Listed in the register as native to these states. Click a state for its full native-plant guide.
Growing conditions
From the Lady Bird Johnson Wildflower Center Native Plant Database.
| Sun | Sun, Part Shade, Shade |
|---|---|
| Water | Moist, Wet |
| Soil | Fertile, moist to wet |
| Bloom | Jul-Sep |
| Height | Up to 4 ft |
| Wildlife value | Larval host for American painted lady; special value to native bees |
Invasive / regulated
Aggressive growth -- too aggressive for small areas, needs competition
Buying it
Wild species
Sold true to the wild species as of the last check (16 Sep 2026), via Amazon.
Sold as: Seeds via Amazon · listing verified 16 Sep 2026
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