American onion (Allium unifolium) is a bulbous (or similar) plant that can grow 10cm – 50cm tall and up to 10cm wide.
This plant is commonly known as American onion.
This is a deciduous plant that takes 2-5 years to reach full maturity.
Plant profile
Common name: American onion
Scientific name: Allium unifolium
Plant type: Bulbs
Habit: Columnar / Upright
Height: 10cm – 50cm
Spread: Up to 10cm
Foliage: Deciduous
Sunlight: Full Sun
Soil: Chalk, Clay, Loam, Sand
Moisture: Moist but well drained, Well drained
Garden type: Rock & Gravel Garden
Planting type: Flower borders and bedding
Other characteristics: Plants for pollinators, RHS Award of Garden Merit
Seasonal colors
| Season | Stem | Foliage | Flower | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
How to plant American onion (Allium unifolium) – Stickpen, Public domain, via Wikimedia Commons
Cultivation profiles – Growing American onion (Allium unifolium) – Michal Maňas, CC BY 2.5, via Wikimedia Commons
