Mississippi planting zones & frost dates

The 2 Mississippi cities on this site fall in zones 8b, 9a. Last spring frost dates range from Mar 5 in Gulfport to Mar 13 in Jackson.

City	Zone	Last frost	First frost	Population
Jackson	8b	Mar 13	Nov 12	141,449
Gulfport	9a	Mar 5	Nov 25	74,621

Frost dates are 30%-risk dates from the nearest suitable NOAA station. Population: Census Vintage 2024 estimates.