Quick answer: Marsh marigold (Caltha palustris) is native to 8 states. What's commonly sold under this name is the true wild species. It's typically seed, verified 15 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 | Part Shade, Shade |
|---|---|
| Water | High water, Moist-Wet |
| Soil | Muddy, humus-rich soil |
| Bloom | Bloom Apr-May |
| Height | Up to 2 ft tall |
| Wildlife value | Attracts birds, conspicuous flowers, all parts poisonous in quantity |
Plant juices can cause blistering/inflammation on skin or mucous membranes on contact, and gastric illness if ingested. Leaves are poisonous part, toxic mainly in large quantities. Symptoms: burning throat, vomiting, bloody diarrhea, dizziness, fainting, convulsions. Toxic compound: protoanemonin
Buying it
Sold true to the wild species as of the last check (15 Sep 2026), via Amazon.
Sold as: Seed via Amazon · listing verified 15 Sep 2026
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