Prairie Onion
Allium stellatum
Last reviewed: June 2026
Allium stellatum (Prairie Onion) is a native wildflower blooming June through November across the Great Plains and Midwest. This drought-tolerant perennial attracts butterflies and bees with its star-shaped pink flower clusters.
Light
full sun
Water
medium
Size
12"–24" H × 12"–24" W
Bloom
Jun, Jul, Aug, Sep, Oct, Nov
Native to
AR, IA, IL, KS and 11 more states
Pollinators
butterflies, bees
Browse plants for this ecoregion
Prairie Onion is a compact perennial bulb that produces clusters of small pink to purple flowers on slender stems. It blooms reliably from summer through fall, then goes dormant in winter. The narrow, grass-like foliage emerges in spring and provides a neat, upright appearance.
Growing Prairie Onion
Grow Prairie Onion in full sun and medium water. Mature plants reach 12 to 24 inches tall and spread 12 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Prairie Onion is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
Wildlife value
The long blooming period makes this an excellent pollinator plant, attracting butterflies and native bees throughout the growing season. The seed heads also provide food for small birds.
Common questions
- When does Prairie Onion bloom?
- Prairie Onion blooms from June through November, with peak flowering typically occurring in late summer and early fall.
- What pollinators visit Allium stellatum?
- Prairie Onion attracts butterflies and bees, making it valuable for pollinator gardens and native plant landscapes.
- Where is Prairie Onion native?
- Allium stellatum is native to 16 states across the Great Plains and Midwest, including Minnesota, Iowa, Kansas, Texas, and surrounding states.
- What growing conditions does Prairie Onion prefer?
- Prairie Onion thrives in full sun to partial sun with medium to low water requirements, making it well-suited for prairie gardens and xeriscaping.
- Is Prairie Onion HOA-friendly?
- Prairie Onion is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Prairie Onion? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.