| Scientific Name: | Allium fistulosum |
| Common Name: | green onion, Welsh onion, spring onion, Japanese bunching onion |
| Family Name: | Amaryllidaceae |
| Origin: | S.E. Asia / Japan / China |
| Hardiness Zone: | Zone 5: (-29 to -23 °C) |
| Plant Type: | Annual (grown as), Herbaceous perennial |
| Mature Size: | 0.4 - 0.7m x 0.1 - 0.3m (height x width) |
| Habit: | Upright |
| Form: | Vase |
| Texture: | Coarse |
| Landscape Uses: | Attract beneficial insects, Herb, Urban agriculture |
| Exposure: | Full sun |
| Soil or Media: | Well-drained |
| Leaves: | Simple, Alternate, Soft flexible, Parallel venation, Glabrous, Glaucous, Linear, Entire |
| Flowers: | Umbel, White, Apr-May-Jun-Jul-Aug |
| Fruit: | Capsule, Brown, Jul-Aug |
| Key ID Features: | |
| Bulbs elongated and only slightly thicker than the stem; leaves alternate, hollow, most 30-60 long x 1-2(-4)cm wide; umbels round-ovoid, 6-8cm wide, florets 50-100, tepals erect, 6-9mm long x 2-3mm wide, yellowish-white, Apr-Aug, peduncles 50-90cm long, tappering to apex, and also hollow (fistulosum means hollow). | |