DibbleWhen to plant green onion in Zone 10
In Zone 10, the last spring frost usually passes around January 31 and the first fall frost arrives around December 15, leaving about 318 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Nearly frost-free. Grow cool crops in winter; summers are too hot for many vegetables.
Planting windows for green onion in Zone 10
| Task | Window |
|---|---|
| Direct sow | Jan 3 to Jan 17 |
| Estimated harvest | Mar 4 to Apr 3 |
The harvest estimate counts 60 days to maturity, then a picking window of about 30 days. These windows use typical frost dates for Zone 10; Dibble pins them to your exact ZIP code.
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How to grow green onion
Sow scallions thickly 4 weeks before last frost and harvest young. Quick and hardy, succession sow for a steady supply.
Companion plants
Good neighbors for Green Onion:
Better kept apart:
Green Onion in nearby zones
Keep exploring
Green Onion: the full growing guide · The Zone 10 planting calendar · Every crop and zone
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Dates are estimates based on typical frost dates for the zone. Your yard has its own microclimate, so use them as a starting point and adjust as you learn your space.