| Scientific Name: | Allium cepa |
| Common Name: | bulb onion, spring onion, shallot |
| Family Name: | Amaryllidaceae |
| Origin: | Central / west Asia |
| Hardiness Zone: | Zone 5: (-29 to -23 °C) |
| Plant Type: | Biennial, Herbaceous perennial |
| Mature Size: | 0.4 - 0.7m x 0.1 - 0.3m (height x width) |
| Habit: | Upright |
| Form: | Vase |
| Texture: | Fine |
| Landscape Uses: | Attract beneficial insects, Urban agriculture |
| Exposure: | Full sun |
| Soil or Media: | Well-drained |
| Leaves: | Simple, Alternate, Soft flexible, Parallel venation, Glabrous, Glaucous, Linear, Entire |
| Flowers: | Umbel, White, Jun-Jul |
| Fruit: | Capsule, Brown, Black, Aug-Sep |
| Key ID Features: | |
| Bulbs mostly clustered with papery covering, white to brownish or reddish; leaves cylindrical, linear; umbels spherical, densely flowered on peduncle up to 1m tall; florets stellate, pedicels 3-4 times as long as the tepals which are 4-5mm long and greenish-white. | |