DibbleWhen to plant cabbage in Zone 9
In Zone 9, the last spring frost usually passes around March 1 and the first fall frost arrives around December 1, leaving about 275 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Very long season. Plant cool crops in fall and winter; manage summer heat.
Planting windows for cabbage in Zone 9
| Task | Window |
|---|---|
| Start seeds indoors | Jan 18 to Feb 1 |
| Transplant | Feb 15 to Mar 1 |
| Estimated harvest | Apr 26 to May 17 |
The harvest estimate counts 70 days to maturity, then a picking window of about 21 days. These windows use typical frost dates for Zone 9; Dibble pins them to your exact ZIP code.
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Cabbage in a Zone 9 season
Zone 9 gives about 275 frost-free days. Cabbage needs roughly 70 days from transplant. That leaves about 205 days of slack, so there is room for a late start or a second planting.
How to grow cabbage
Start seeds indoors about 4 weeks before planting out, and set the plants out in the cool part of the year. Steady moisture prevents split heads. Where winters are mild, plant in autumn and harvest before the heat.
Companion plants
Good neighbors for Cabbage:
Better kept apart:
Cabbage in other zones
Not in Zone 9? Pick your zone for the same dated windows.
Keep exploring
Cabbage: the full growing guide · The Zone 9 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.