Plant field guide
Green Onion (Scallion)
Mild, versatile allium harvested for its green tops and tender white base. Also called scallions or bunching onions.
Growing requirements
- Scientific name
- Allium fistulosum
- Sun
- full sun
- Water
- moderate
- Height
- 12 in (30 cm) – 18 in (46 cm)
- Spread
- 2 in (5 cm) – 4 in (10 cm)
- Spacing
- 2 in (5 cm)
- Hardiness zones & minimum temperature
- USDA 3–9; average annual extreme minimum from -40°F (-40.0°C). Hardiness does not predict local frost dates.
- Difficulty
- easy
Planting & seasonal timing
Northern Hemisphere planting months: not yet verified in our database.
Northern Hemisphere pruning months: no calendar months recorded.
For the Southern Hemisphere, these seasonal windows shift approximately six months. Check your local frost forecast, soil temperature, and species requirements; calendar months are not a guarantee of planting safety.
Can be harvested at any size. Perennial bunching types multiply each year. Regrows from the base.
Pruning
Harvest by cutting 1 inch above the base to allow regrowth.
Fertilizer
Balanced liquid fertilizer
Every 2-3 weeks for container growing
Mulch
Light mulch to retain moisture.