Quick answer: Prairie onion (Allium stellatum) is native to 12 states. What's commonly sold under this name is the true wild species. It's typically seeds, verified 16 Sep 2026.
Photo: Mason Brock (Masebrock), Wikimedia Commons (PUBLIC DOMAIN)
Where it's native
Listed in the directory 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 |
|---|---|
| Water | Moist |
| Soil | Mesic to dry, rocky |
| Bloom | spring-fall |
| Height | Up to 2 ft |
| Wildlife value | Attracts butterflies |
Low toxicity if eaten in large quantities; nausea/vomiting/diarrhea
Some Allium species can become weedy in warmer climates
Buying it
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
See where to buy →Quick answers about Prairie onion
Where is Prairie onion native?
Prairie onion (Allium stellatum) is native to 12 states across the Midwest and South. Check your state's page in this directory for the full list of plants native where you live.
When does Prairie onion bloom?
Prairie onion blooms spring-fall. Exact timing shifts a few weeks with latitude and elevation.
What growing conditions does Prairie onion need?
Light: Part shade. Water: Moist. Soil: Mesic to dry, rocky. Mature height: Up to 2 ft.
Is Prairie onion good for pollinators and wildlife?
Yes. Wildlife value: Attracts butterflies.
Is Prairie onion deer-resistant or drought-tolerant?
Prairie onion is deer-resistant and tolerates shade.
Is Prairie onion toxic?
Low toxicity if eaten in large quantities; nausea/vomiting/diarrhea.
Where can I buy real Prairie onion seed or plants?
We found a listing sold as seeds that names the true species, last checked 16 Sep 2026. Look for the scientific name Allium stellatum on any listing.
Similar native plants
Native plants that share growing conditions or range with Prairie onion.
- Prairie ironweed Vernonia fasciculata
- Prairie tickseed Coreopsis palmata
- Sweet coneflower Rudbeckia subtomentosa
- Large penstemon (shell-leaf beardtongue) Penstemon grandiflorus
- Prairie goldenrod Solidago nemoralis
- Showy goldenrod Solidago speciosa
Also listed under
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