What to plant in September in zone 12b
6 crops to start indoors, direct sow, transplant, or harvest in September in USDA hardiness zone 12b. Typical last spring frost around Apr 12, 2026, first fall frost around Dec 1, 2026 — exact dates vary by location within the zone.
Want exact September dates for your address in zone 12b, a drag-and-drop bed layout, and sowing reminders? Enter your ZIP:
Or get a printable zone 12b calendar and reminders by email:
Direct sow outside
Sow these straight into the garden bed this month.
Plant out
Set out these crops (sets, tubers, or starts) now.
Keep going
Timings use NOAA 1991–2020 climate normals for a representative location (ZIP 96710) in zone 12b, computed with the same engine as GardenDraft’s in-app schedule. Guidance, not guarantees — your exact dates depend on your address.