Fall in zone 9aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 31558 (St. Marys, GA)
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, Brunswick 23 S, GA (3 miles away).
- Average last spring frostFeb 1950% chance of a 32°F freeze after this date
- Average first fall frostDec 1450% chance of a 32°F freeze by this date
- Growing season (frost-free)299 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
77°F 55°F or warmer
24-hour average · latest 74°F, as of Oct 18, 1:00 AM CDT
Measured at NOAA USCRN station Brunswick 23 S, 3 mi away. Daily averages: Thu 78°, Fri 79°, Sat 77°.
4-inch depth
78°F 55°F or warmer
24-hour average · latest 77°F, as of Oct 18, 1:00 AM CDT
Measured at NOAA USCRN station Brunswick 23 S, 3 mi away. Daily averages: Thu 77°, Fri 78°, Sat 78°.
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 31558 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 78°F at 4 inches. Fall pre-emergent (annual bluegrass, winter weeds): not yet. Apply as soil cools toward 70°F (typically 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 6 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
- Lettuce: fall sowing Oct 5–Nov 2
- Kale: fall transplant Sep 21–Oct 19
- Collards: fall transplant Sep 21–Oct 19
- Kohlrabi: fall sowing Oct 5–19
- Swiss chard: fall sowing Oct 5–19
- Beet: fall sowing Oct 5–19
- Turnip: fall sowing Oct 5–19
- Green onion / scallion: fall sowing Oct 5–19
- Strawberry (plants): fall transplant Oct 5–Nov 2
Coming up in the next 3 weeks
- Lettuce: fall transplant Oct 19–Nov 9
- Spinach: fall sowing Oct 19–Nov 9
- Bok choy / Asian greens: fall sowing Oct 19–Nov 2
- Arugula: fall sowing Oct 19–Nov 16
- Mustard greens: fall sowing Oct 19–Nov 2
- Radish: fall sowing Nov 2–16
- Garlic: fall sowing Nov 2–30
- Shallot: fall sowing Nov 2–30
- Cilantro: fall sowing Oct 19–Nov 2
- Dill: fall sowing Oct 19–Nov 2
Prune now
No frost-timed pruning windows are open this week.
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) | Jan 19 |
| 50% (the "average" last frost) | Feb 19 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 14 |
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 21 |
| 50% (the "average" first frost) | Dec 14 |
| 90% (late: most years have frozen by now) | Jan 15 (next year) |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 5 | Nov 29 |
| 32°F (freeze) | Feb 19 | Dec 14 |
| 28°F (hard freeze) | Feb 3 | Jan 3 (next year) |
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 31558
Dates count from your average last spring frost (Feb 19) and first fall frost (Dec 14). 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 | Dec 25–Jan 8 | Feb 26–Mar 12 (transplant) | Aug 17–Sep 14 (transplant) |
| Pepper (sweet and hot) | Dec 11–25 | Mar 5–19 (transplant) | Aug 24–Sep 14 (transplant) |
| Eggplant | Dec 11–25 | Mar 5–19 (transplant) | Aug 24–Sep 14 (transplant) |
| Tomatillo | Dec 25–Jan 8 | Feb 26–Mar 12 (transplant) | – |
| Lettuce | Dec 25–Jan 8 | Jan 29–Feb 19 (transplant) Jan 22–Mar 5 (sow outdoors) | Oct 19–Nov 9 (transplant) Oct 5–Nov 2 (sowing) |
| Spinach | – | Jan 8–29 (sow outdoors) | Oct 19–Nov 9 (sowing) |
| Kale | Dec 25–Jan 8 | Jan 22–Feb 5 (transplant) Jan 22–Feb 5 (sow outdoors) | Sep 21–Oct 19 (transplant) Sep 7–Oct 5 (sowing) |
| Collards | Dec 25–Jan 8 | Jan 22–Feb 19 (transplant) Jan 22–Feb 19 (sow outdoors) | Sep 21–Oct 19 (transplant) Sep 7–Oct 5 (sowing) |
| Broccoli | Dec 11–25 | Jan 22–Feb 5 (transplant) | Sep 7–Oct 5 (transplant) |
| Cabbage | Dec 11–25 | Jan 22–Feb 5 (transplant) | Sep 7–Oct 5 (transplant) |
| Cauliflower | Dec 11–25 | Feb 5–19 (transplant) | Sep 7–Oct 5 (transplant) |
| Brussels sprouts | Nov 27–Dec 11 | Jan 22–Feb 5 (transplant) | Aug 24–Sep 14 (transplant) |
| Kohlrabi | Dec 25–Jan 8 | Jan 22–Feb 5 (transplant) Jan 22–Feb 5 (sow outdoors) | Oct 5–19 (sowing) |
| Bok choy / Asian greens | – | Jan 22–Feb 5 (sow outdoors) | Oct 19–Nov 2 (sowing) |
| Arugula | – | Jan 22–Feb 19 (sow outdoors) | Oct 19–Nov 16 (sowing) |
| Mustard greens | – | Jan 22–Feb 12 (sow outdoors) | Oct 19–Nov 2 (sowing) |
| Swiss chard | Jan 8–22 | Feb 5–26 (transplant) Feb 5–Mar 5 (sow outdoors) | Oct 5–19 (sowing) |
| Beet | – | Jan 22–Feb 19 (sow outdoors) | Oct 5–19 (sowing) |
| Carrot | – | Jan 29–Feb 26 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Radish | – | Jan 15–Feb 26 (sow outdoors) | Nov 2–16 (sowing) |
| Turnip | – | Jan 22–Feb 12 (sow outdoors) | Oct 5–19 (sowing) |
| Parsnip | – | Jan 29–Feb 19 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Dec 25–Jan 22 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Onion (bulbing) | Nov 27–Dec 11 | Jan 8–22 (transplant) | – |
| Green onion / scallion | – | Jan 8–Feb 5 (sow outdoors) | Oct 5–19 (sowing) |
| Leek | Nov 27–Dec 11 | Jan 22–Feb 5 (transplant) | – |
| Garlic | – | – | Nov 2–30 (sowing) |
| Shallot | – | Jan 8–22 (transplant) | Nov 2–30 (sowing) |
| Potato | – | Jan 22–Feb 5 (transplant) | Aug 24–Sep 7 (transplant) |
| Sweet potato | – | Mar 12–26 (transplant) | – |
| Sweet corn | – | Feb 26–Mar 12 (sow outdoors) | – |
| Bean, bush (snap) | – | Feb 26–Mar 12 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Bean, pole | – | Feb 26–Mar 12 (sow outdoors) | – |
| Lima bean | – | Mar 5–19 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 12–Apr 2 (sow outdoors) | – |
| Cucumber | Jan 22–29 | Feb 26–Mar 12 (transplant) Feb 26–Mar 12 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Summer squash / zucchini | Jan 22–29 | Feb 26–Mar 12 (transplant) Feb 26–Mar 12 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Winter squash | Jan 22–29 | Feb 26–Mar 12 (transplant) Feb 26–Mar 12 (sow outdoors) | – |
| Pumpkin | – | Feb 26–Mar 12 (sow outdoors) | – |
| Watermelon | Jan 22–29 | Mar 5–19 (transplant) Mar 5–19 (sow outdoors) | – |
| Cantaloupe / muskmelon | Jan 22–29 | Mar 5–19 (transplant) Mar 5–19 (sow outdoors) | – |
| Okra | Jan 8–22 | Mar 5–19 (transplant) Mar 5–19 (sow outdoors) | – |
| Celery | Nov 27–Dec 11 | Feb 26–Mar 5 (transplant) | – |
| Basil | Jan 8–22 | Feb 26–Mar 12 (transplant) Feb 26–Mar 12 (sow outdoors) | – |
| Cilantro | – | Feb 5–Mar 5 (sow outdoors) | Oct 19–Nov 2 (sowing) |
| Parsley | Dec 11–25 | Feb 5–19 (transplant) Jan 29–Feb 19 (sow outdoors) | – |
| Dill | – | Feb 19–Mar 5 (sow outdoors) | Oct 19–Nov 2 (sowing) |
| Sunflower | – | Feb 19–Mar 5 (sow outdoors) | – |
| Asparagus (crowns) | – | Jan 22–Feb 5 (transplant) | – |
| Rhubarb (crowns) | – | Jan 22–Feb 5 (transplant) | – |
| Strawberry (plants) | – | Jan 22–Feb 5 (transplant) | Oct 5–Nov 2 (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
Georgia has a university or garden plant program: Georgia Gold Medal Plants (ended 2017). Plant frost-tender annuals after February 19 here (the average last frost). Not affiliated with the program.
Where these numbers come from
Station: Brunswick 23 S, GA (NOAA GHCN-Daily ID USW00063856), elevation 25 ft, 2.9 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Fernandina Beach, FL | 10 mi | Feb 2 | Jan 4 (next year) |
| Woodbine, GA | 16 mi | Mar 14 | Nov 25 |
| Jacksonville, FL | 25 mi | Feb 25 | Dec 7 |
The average last-frost dates of these stations span 43 days, a rough guide to local variation. See data sources & methods.
Frost questions for 31558
When is the last frost in 31558?
The average (50% chance) last spring freeze of 32°F for ZIP 31558 is February 19. For a more cautious planting date, use March 14, when only 1 year in 10 still sees a later freeze.
When is the first frost in 31558?
The average first fall freeze is December 14. In 1 year in 10 it comes by November 21.
What hardiness zone is 31558?
ZIP 31558 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 31558 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
31547 Kings Bay Base 31548 Kingsland 32097 Yulee 32034 Fernandina Beach 31569 Woodbine 31527 Jekyll Island 31565 Waverly 32226 Jacksonville
Other ZIP codes in Camden County
31547 31548 31565 31568 31569 All Camden County frost dates · Georgia frost dates
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Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
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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.