Green Onion Growing Guide
Amaryllidaceae family
Days to Harvest65 days
Sunlightfull-to-part
Frost ToleranceHeavy
Spacing16/sqft (3" apart)
Germination7-14 days
HardinessHardy
Germ. Temp65°F
Start Indoors6 weeks before last frost
Companion Planting
Growth Stages
- Seedling / Sprouting
- Leaf Growth / Bulbing
- Mature / Harvest Ready
Planting Dates by Zone
| Zone | Start Indoors | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 1a | Apr 13 | May 11 | Apr 27 | Jun 20 |
| Zone 1b | Apr 13 | May 11 | Apr 27 | Jun 20 |
| Zone 2a | Apr 3 | May 1 | Apr 17 | Jun 10 |
| Zone 2b | Apr 13 | May 11 | Apr 27 | Jun 20 |
| Zone 3a | Apr 10 | May 8 | Apr 24 | Jun 17 |
| Zone 3b | Apr 3 | May 1 | Apr 17 | Jun 10 |
| Zone 4a | Mar 24 | Apr 21 | Apr 7 | May 31 |
| Zone 4b | Mar 20 | Apr 17 | Apr 3 | May 27 |
| Zone 5a | Mar 17 | Apr 14 | Mar 31 | May 24 |
| Zone 5b | Mar 17 | Apr 14 | Mar 31 | May 24 |
| Zone 6a | Mar 17 | Apr 14 | Mar 31 | May 24 |
| Zone 6b | Mar 4 | Apr 1 | Mar 18 | May 11 |
| Zone 7a | Mar 4 | Apr 1 | Mar 18 | May 11 |
| Zone 7b | Feb 27 | Mar 27 | Mar 13 | May 6 |
| Zone 8a | Feb 22 | Mar 22 | Mar 8 | May 1 |
| Zone 8b | Feb 8 | Mar 8 | Feb 22 | Apr 17 |
| Zone 9a | Feb 6 | Mar 6 | Feb 20 | Apr 15 |
| Zone 9b | Jan 27 | Feb 24 | Feb 10 | Apr 5 |
| Zone 10a | Jan 9 | Feb 6 | Jan 23 | Mar 18 |
| Zone 10b | Dec 17 | Jan 14 | Dec 31 | Feb 23 |
| Zone 11a | Dec 17 | Jan 14 | Dec 31 | Feb 23 |
| Zone 11b | Dec 4 | Jan 1 | Dec 18 | Feb 10 |
| Zone 12a | Nov 20 | Dec 18 | Dec 4 | Jan 27 |
| Zone 12b | Nov 20 | Dec 18 | Dec 4 | Jan 27 |
| Zone 13a | Nov 20 | Dec 18 | Dec 4 | Jan 27 |
| Zone 13b | Nov 20 | Dec 18 | Dec 4 | Jan 27 |
Frequently Asked Questions
How long does it take to grow Green Onion?
Green Onion takes approximately 65 days from planting to harvest.
How much sun does Green Onion need?
Green Onion requires full-to-part.
How far apart should I plant Green Onion?
Plant Green Onion at 16/sqft (3" apart) using square foot gardening spacing.
Can Green Onion survive frost?
Green Onion is tolerant of heavy frost and can withstand freezing temperatures.
What are good companion plants for Green Onion?
Good companion plants for Green Onion include Carrot, Beet, Lettuce, Tomato, Pepper, Cabbage, Strawberries. Avoid planting near Bean, Pea.
How long does Green Onion take to germinate?
Green Onion seeds germinate in 7-14 days at an optimal temperature of 65°F.
When should I start Green Onion seeds indoors?
Start Green Onion seeds indoors 6 weeks before your last frost date, then transplant -2 weeks after last frost.
Plan Your Green Onion Garden
Track Green Onion from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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