Quick answer: White snakeroot (Ageratina altissima) is native to 7 states. What's commonly sold under this name is often a bred variety or the wrong species — see the lookalike alert below. 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 | Part Shade, Shade |
|---|---|
| Water | Medium |
| Soil | Rich, neutral pH |
| Bloom | Aug-Oct |
| Height | Up to 4 ft |
| Wildlife value | Attracts birds; conspicuous white flowers |
Contains tremetol; poisonous to livestock and to humans (historically caused "milk sickness" via contaminated dairy)
Spreads by seed and can become weedy
Lookalike alert
Live plant, 2-gallon pot ('Chocolate' cultivar), In Stock, $45.20.
Sold as: Live plant via Amazon · listing verified 16 Sep 2026
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