Seed-start answer
Spinach is usually direct-sown around Dec 23
In ZIP 92805, spinach is usually direct-sown around Dec 23 instead of started indoors.
Source: anaheim-fullerton frost station, USDA zone 10b, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.
This uses ZIP 92805, the Anaheim frost station, and the Jan 20 last-frost estimate.
Seed starting schedule
Spinach dates for Anaheim, CA
| Step | Date | How to use it |
|---|---|---|
| Direct Sow | December 23, 2025 | Sow seed outside when the crop and soil can handle the window. |