Quick answer: Northern blue flag (Iris versicolor) is native to 1 state. What's commonly sold under this name is the true wild species. It's typically live plant, 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 |
|---|---|
| Water | Moist-Wet |
| Soil | Moist, rich soils, acidic pH |
| Bloom | Bloom May-Aug |
| Height | Up to 3 ft tall |
| Wildlife value | Attracts hummingbirds and birds, conspicuous flowers |
Poisonous to livestock. Poisonous parts: rhizomes/rootstocks, fresh or dry. Minor skin irritation when touched, low toxicity if ingested; nausea, vomiting, abdominal pain, diarrhea, elevated temperature if ingested
Buying it
Sold true to the wild species as of the last check (16 Sep 2026), via Amazon.
Sold as: Live plant via Amazon · listing verified 16 Sep 2026
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