Fall in zone 9aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 70464 (St. Tammany Parish, LA)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Picayune, MS (11 miles away).
- Average last spring frostMar 950% chance of a 32°F freeze after this date
- Average first fall frostNov 1850% chance of a 32°F freeze by this date
- Growing season (frost-free)255 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°F avg. coldest night
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This week in your yard
As of Oct 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
No soil station with a fresh reading within 62 miles.
4-inch depth
No soil station with a fresh reading within 62 miles.
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
The latest National Weather Service 7-day forecast and any Frost Advisory or Freeze Warning for 70464 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
No soil reading near this ZIP. Typical extension timing for your region: spring mid-February to early March; fall September to early October.
Fertilizer window
Lawn region: Southeast (warm, humid). Timing only; always follow the product label.
- Centipedegrass (warm-season): Spring: Not before mid-May (NC State); after full green-up (about Apr 24 here, using green-up about 3–4 weeks after your average last frost); Summer: Optional mid-summer feeding, especially on sandy coastal soils. Avoid: Early-spring feeding, frequent feeding and liming unless a soil test calls for it (centipede decline).
Plant now
- Arugula: fall sowing Sep 23–Oct 21
- Radish: fall sowing Oct 7–21
- Garlic: fall sowing Oct 7–Nov 4
- Shallot: fall sowing Oct 7–Nov 4
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 18: skip heavy pruning in the 6–8 weeks before it, because new growth may not harden off in time.
Spring-flowering shrubs are pruned right after their flowers fade, not by date. See the pruning guide.
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Feb 17 |
| 50% (the "average" last frost) | Mar 9 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 31 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Nov 3 |
| 50% (the "average" first frost) | Nov 18 |
| 90% (late: most years have frozen by now) | Dec 11 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 26 | Nov 7 |
| 32°F (freeze) | Mar 9 | Nov 18 |
| 28°F (hard freeze) | Feb 24 | Dec 3 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
Vegetable planting calendar for 70464
Dates count from your average last spring frost (Mar 9) and first fall frost (Nov 18). Half of years have a frost after the spring date, so give tender crops (tomatoes, peppers, squash) some slack.
| Crop | Start indoors | Spring planting | Fall planting |
|---|---|---|---|
| Tomato | Jan 12–26 | Mar 16–30 (transplant) | Jul 22–Aug 19 (transplant) |
| Pepper (sweet and hot) | Dec 29–Jan 12 | Mar 23–Apr 6 (transplant) | Jul 29–Aug 19 (transplant) |
| Eggplant | Dec 29–Jan 12 | Mar 23–Apr 6 (transplant) | Jul 29–Aug 19 (transplant) |
| Tomatillo | Jan 12–26 | Mar 16–30 (transplant) | – |
| Lettuce | Jan 12–26 | Feb 16–Mar 9 (transplant) Feb 9–Mar 23 (sow outdoors) | Sep 23–Oct 14 (transplant) Sep 9–Oct 7 (sowing) |
| Spinach | – | Jan 26–Feb 16 (sow outdoors) | Sep 23–Oct 14 (sowing) |
| Kale | Jan 12–26 | Feb 9–23 (transplant) Feb 9–23 (sow outdoors) | Aug 26–Sep 23 (transplant) Aug 12–Sep 9 (sowing) |
| Collards | Jan 12–26 | Feb 9–Mar 9 (transplant) Feb 9–Mar 9 (sow outdoors) | Aug 26–Sep 23 (transplant) Aug 12–Sep 9 (sowing) |
| Broccoli | Dec 29–Jan 12 | Feb 9–23 (transplant) | Aug 12–Sep 9 (transplant) |
| Cabbage | Dec 29–Jan 12 | Feb 9–23 (transplant) | Aug 12–Sep 9 (transplant) |
| Cauliflower | Dec 29–Jan 12 | Feb 23–Mar 9 (transplant) | Aug 12–Sep 9 (transplant) |
| Brussels sprouts | Dec 15–29 | Feb 9–23 (transplant) | Jul 29–Aug 19 (transplant) |
| Kohlrabi | Jan 12–26 | Feb 9–23 (transplant) Feb 9–23 (sow outdoors) | Sep 9–23 (sowing) |
| Bok choy / Asian greens | – | Feb 9–23 (sow outdoors) | Sep 23–Oct 7 (sowing) |
| Arugula | – | Feb 9–Mar 9 (sow outdoors) | Sep 23–Oct 21 (sowing) |
| Mustard greens | – | Feb 9–Mar 2 (sow outdoors) | Sep 23–Oct 7 (sowing) |
| Swiss chard | Jan 26–Feb 9 | Feb 23–Mar 16 (transplant) Feb 23–Mar 23 (sow outdoors) | Sep 9–23 (sowing) |
| Beet | – | Feb 9–Mar 9 (sow outdoors) | Sep 9–23 (sowing) |
| Carrot | – | Feb 16–Mar 16 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Radish | – | Feb 2–Mar 16 (sow outdoors) | Oct 7–21 (sowing) |
| Turnip | – | Feb 9–Mar 2 (sow outdoors) | Sep 9–23 (sowing) |
| Parsnip | – | Feb 16–Mar 9 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 12–Feb 9 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Onion (bulbing) | Dec 15–29 | Jan 26–Feb 9 (transplant) | – |
| Green onion / scallion | – | Jan 26–Feb 23 (sow outdoors) | Sep 9–23 (sowing) |
| Leek | Dec 15–29 | Feb 9–23 (transplant) | – |
| Garlic | – | – | Oct 7–Nov 4 (sowing) |
| Shallot | – | Jan 26–Feb 9 (transplant) | Oct 7–Nov 4 (sowing) |
| Potato | – | Feb 9–23 (transplant) | Jul 29–Aug 12 (transplant) |
| Sweet potato | – | Mar 30–Apr 13 (transplant) | – |
| Sweet corn | – | Mar 16–30 (sow outdoors) | – |
| Bean, bush (snap) | – | Mar 16–30 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Bean, pole | – | Mar 16–30 (sow outdoors) | – |
| Lima bean | – | Mar 23–Apr 6 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 30–Apr 20 (sow outdoors) | – |
| Cucumber | Feb 9–16 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Summer squash / zucchini | Feb 9–16 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Winter squash | Feb 9–16 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | – |
| Pumpkin | – | Mar 16–30 (sow outdoors) | – |
| Watermelon | Feb 9–16 | Mar 23–Apr 6 (transplant) Mar 23–Apr 6 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 9–16 | Mar 23–Apr 6 (transplant) Mar 23–Apr 6 (sow outdoors) | – |
| Okra | Jan 26–Feb 9 | Mar 23–Apr 6 (transplant) Mar 23–Apr 6 (sow outdoors) | – |
| Celery | Dec 15–29 | Mar 16–23 (transplant) | – |
| Basil | Jan 26–Feb 9 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | – |
| Cilantro | – | Feb 23–Mar 23 (sow outdoors) | Sep 23–Oct 7 (sowing) |
| Parsley | Dec 29–Jan 12 | Feb 23–Mar 9 (transplant) Feb 16–Mar 9 (sow outdoors) | – |
| Dill | – | Mar 9–23 (sow outdoors) | Sep 23–Oct 7 (sowing) |
| Sunflower | – | Mar 9–23 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 9–23 (transplant) | – |
| Rhubarb (crowns) | – | Feb 9–23 (transplant) | – |
| Strawberry (plants) | – | Feb 9–23 (transplant) | Sep 9–Oct 7 (transplant) |
Typical ranges from university extension planting calendars, adjusted to your frost dates. Probabilities, not guarantees. Fall windows that would overlap spring planting are left out, as are fall crops of frost-tender plants where the frost-free season is under 210 days.
Plants that do well here
Louisiana has a university or garden plant program: Louisiana Super Plants. Plant frost-tender annuals after March 9 here (the average last frost). Not affiliated with the program.
Where these numbers come from
Station: Picayune, MS (NOAA GHCN-Daily ID USC00226921), elevation 64 ft, 11.1 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Covington 4 NNW, LA | 13 mi | Mar 12 | Nov 18 |
| Slidell AP, LA | 14 mi | Mar 3 | Nov 21 |
| Bogalusa, LA | 17 mi | Mar 2 | Nov 23 |
The average last-frost dates of these stations span 10 days, a rough guide to local variation. See data sources & methods.
Frost questions for 70464
When is the last frost in 70464?
The average (50% chance) last spring freeze of 32°F for ZIP 70464 is March 9. For a more cautious planting date, use March 31, when only 1 year in 10 still sees a later freeze.
When is the first frost in 70464?
The average first fall freeze is November 18. In 1 year in 10 it comes by November 3.
What hardiness zone is 70464?
ZIP 70464 is in USDA zone 9a (20 to 25°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 70464 right now?
This page shows the latest 2-inch and 4-inch soil temperature from the nearest public soil station (USDA SCAN, NOAA USCRN or TexMesonet), or a labeled estimate when no station is close, against the 50–55°F spring pre-emergent band.
Nearby ZIP codes
70420 Abita Springs 70431 70463 Sun 70445 Lacombe 70452 Pearl River 70435 70457 70471 Mandeville
Other ZIP codes in St. Tammany Parish
70420 70431 70433 70435 70437 70445 70447 70448 70452 70457 70458 70460 70461 70463 70471 All St. Tammany Parish frost dates · Louisiana frost dates
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Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.