Louisiana frost dates

Across Louisiana, the average last spring frost is around March 5 and the average first fall frost around November 15 — roughly 255 frost-free days. USDA zones 8a, 8b, 9a, 9b.

Risk you accept	Last spring frost by	First fall frost by
Cautious (~10%)	March 19	November 1
Average (~50%)	March 5	November 15
Gambler (~90%)	February 19	November 29

→ Turn these into sowing dates with the Louisiana planting calendar, or look up an exact ZIP code.

Statewide average from NOAA/NCEI freeze normals. Cautious/gambler dates are about two weeks either side of the average.