Quick answer: Purple milkweed (Asclepias purpurascens) is native to 1 state. What's commonly sold under this name is the true wild species. It's typically seed, 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 |
|---|---|
| Water | Dry |
| Soil | Not recorded in the wildflower.org profile |
| Bloom | Bloom May-Jul |
| Height | Up to 4 ft tall |
| Wildlife value | Special value to native/bumble/honey bees, attracts butterflies, supports conservation biological control |
All parts poisonous, toxic only in large quantities; symptoms: vomiting, stupor, weakness, spasms
Endangered in MA and WI; no extant populations in RI (conservation concern, not invasive)
Buying it
Sold true to the wild species as of the last check (16 Sep 2026), via Amazon.
Sold as: Seed via Amazon · listing verified 16 Sep 2026
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