Seed-start answer
Start kale seeds indoors around Jan 25
In ZIP 78205, start kale seeds indoors around Jan 25, about 35 days before the Mar 1 last-frost estimate.
Source: san-antonio-intl frost station, USDA zone 9a, 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 78205, the San Antonio frost station, and the Mar 1 last-frost estimate.
Seed starting schedule
Kale dates for San Antonio, TX
| Step | Date | How to use it |
|---|---|---|
| Start Indoors | January 25, 2026 | Start seeds under lights or in a bright indoor seed-starting space. |
| Transplant Outdoors | February 15, 2026 | Move hardened-off seedlings outside after the frost-risk window. |
| Direct Sow | February 8, 2026 | Sow seed outside when the crop and soil can handle the window. |