Slidell, LA 39572 Frost Dates
When can you plant in Slidell, LA?
Typically, the last spring freeze lands around 03/06, roughly 190 days out. The first fall frost typically arrives around 11/19, about 262 frost-free days later.
The USDA Plant Hardiness Zone Map puts Slidell in Zone 9a (20 to 25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 12 weeks of growing season left in Slidell before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Slidell's last frost
03/06 is the middle of 30 years of NOAA records, not a promise. Plant by 02/05 and you're betting against frost in roughly 9 years out of 10. 03/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Slidell compares
At roughly 262 frost-free days, Slidell places 6,201 of 40,283 ZIP codes in this dataset. Within LA, it ranks 493 of 710.
Learn more
zone vs. frost date covers why Zone 9a and Slidell's frost date answer different questions. the frost range covers how to read the range around Slidell's dates instead of trusting one.