DibbleWhen to plant tomatillo 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 tomatillo in Zone 9
| Task | Window |
|---|---|
| Start seeds indoors | Jan 18 to Feb 1 |
| Transplant | Mar 8 to Mar 22 |
| Estimated harvest | May 22 to Jul 21 |
The harvest estimate counts 75 days to maturity, then a picking window of about 60 days. These windows use typical frost dates for Zone 9; Dibble pins them to your exact ZIP code.
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How to grow tomatillo
Grow tomatillos like tomatoes, but plant at least two for pollination. Fruit is ready when it fills and splits its papery husk.
Companion plants
Good neighbors for Tomatillo:
Better kept apart:
Tomatillo in nearby zones
Keep exploring
Tomatillo: 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.