Wild Onion
Allium canadense
A native North American perennial onion with flat, grass-like leaves and bulbs that emit a clear onion scent. It commonly appears in lawns, meadows and woodland edges and is regarded as both a wildflower and a lawn weed.
- Light
- Full sun to partial shade
- Water
- Average; tolerates moist soils
- Difficulty
- Easy
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Overview
Wild onion (Allium canadense), also called meadow garlic, is a perennial bulb native to eastern and central North America. It grows from a small white bulb and produces clusters of slender leaves in spring.
Unlike the introduced wild garlic, this species is indigenous to the continent. It readily colonizes lawns and fields, spreading by bulbs, offsets and aerial bulbils.
How to identify it
Identify wild onion by its flat, solid, grass-like leaves and distinct onion smell when crushed.
- Leaves flat and narrow (not hollow), rising from a basal bulb
- Single papery-coated bulb, sometimes with offsets
- Reaches 8-24 in tall in flower
- Flower head bears star-shaped pink to white flowers and often small bulbils that can sprout
- Onion (rather than strong garlic) scent helps separate it from Allium vineale
Care & growing
Wild onion is hardy and self-sufficient, typically managed rather than cultivated.
- Light: Full sun to partial shade
- Water: Average moisture; tolerates damp meadows
- Soil: Adapts to most soils, prefers moist, fertile loam
- Temperature: Cold-hardy perennial active in spring and fall
- Feeding: None required
- Propagation: By bulbs, offsets, seeds and aerial bulbils
Habitat & origin
Wild onion is native to much of eastern and central North America, from Canada south to Texas and Florida.
It grows in meadows, prairies, open woodlands, fields, and increasingly in lawns and disturbed sites. It prefers moist, sunny to lightly shaded ground but is broadly adaptable.
Frequently asked questions
How is wild onion different from wild garlic?
Wild onion has flat, solid leaves and a milder onion scent, while wild garlic (Allium vineale) has hollow, round leaves and a stronger garlic odor.
Is wild onion native or invasive?
Allium canadense is native to North America. It can still behave as an aggressive lawn weed, but it is not a non-native invasive like some other Allium species.
How do I control wild onion in my yard?
Dig out the entire bulb when soil is moist, repeat as it resprouts, and use selective herbicides in fall and spring for heavy infestations. Mowing alone will not eliminate it.
Wild Onion guides
In-depth guides for identifying, growing, and caring for Wild Onion.
