What to plant in March in zone 10b
13 crops to start indoors, direct sow, or transplant in March in USDA hardiness zone 10b. Typical last spring frost around Jan 9, 2026, first fall frost around Jan 5, 2026 — exact dates vary by location within the zone.
Zone 10b covers a lot of ground. Enter your ZIP for March dates from your nearest weather station and a month-by-month calendar:
Transplant outdoors
Move these hardened-off seedlings into the garden.
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 90846) in zone 10b, computed with the same engine as GardenDraft’s in-app schedule. Guidance, not guarantees — your exact dates depend on your address.