Frost Report

All states Louisiana

Frost dates for Simpson, LA

When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.

Last spring frost

March 1

typical year

Safe to plant

March 24

frost is over in 9 of 10 years

First fall frost

November 23

typical year

Growing season

268 days

frost-free, typical year

When to plant

Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.

CropStart indoorsPlant outsideFall planting
Cool-season crops
Peas – Feb 1 – 15 –
Spinach – Jan 18 – Feb 8 Sep 28 – Oct 12
Lettuce – Feb 1 – 22 Sep 28 – Oct 12
Radishes – Feb 1 – Mar 15 Oct 12 – 26
Onions – Feb 1 – 15 –
Potatoes – Feb 8 – 22 –
Carrots – Feb 8 – Mar 1 Aug 31 – Sep 14
Beets – Feb 1 – 15 Sep 14 – 28
Kale Dec 21 – Jan 4 Feb 1 – 15 Sep 14 – 28
Broccoli Dec 21 – Jan 4 Feb 15 – Mar 1 Sep 14 – 28
Cabbage Dec 7 – 21 Feb 1 – 15 Sep 14 – 28
Garlic – – Oct 12 – Nov 2
Warm-season crops
Tomatoes Jan 27 – Feb 10 Mar 24 – Apr 7 –
Peppers Jan 20 – Feb 3 Mar 31 – Apr 14 –
Cucumbers – Mar 24 – Apr 14 –
Zucchini – Mar 24 – Apr 21 –
Pumpkins – Mar 24 – Apr 14 –
Green beans – Mar 24 – Sep 14 –
Sweet corn – Mar 24 – Apr 21 –
Basil Feb 17 – Mar 3 Mar 31 – Apr 7 –

Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.

The year at a glance

Start indoors Plant outside Fall planting

The chance of frost, by date

1 year in 10Half of years9 years in 10
Spring frost after March 24March 1January 31
Fall frost before November 4November 23December 20

Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.

Hard freeze (28°F)

A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around February 7 (March 9 in a late year), and the first one in fall around December 10.

Towns that use these dates

This is the nearest NOAA station with frost records for 1 town.

Simpson

Where these dates come from

NOAA weather station FT POLK FULLERTON LNDG STRIP, LA US (USW00053988), 1991–2020 climate normals. It's the nearest station for 3 zip codes, all within 11 miles:

71438, 71472, 71474

Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.