Start indoors
No supported crops start indoors in September for ZIP 94102.
Month planting calendar
What to plant in September in San Francisco (94102)
In San Francisco, ZIP 94102, zone 10a, here is what you can start indoors, transplant, or direct-sow in September, and what to wait on until later.
Source: san-francisco-downtown frost station, USDA zone 10a, last updated 2026-06-28. Verify locally before planting high-value crops because microclimates, current weather, and yard exposure can move the safe date.
Transplant
No supported crops transplant in September for ZIP 94102.
Direct-sow
No supported crops direct-sow in September for ZIP 94102.