Fall in zone 9aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 29464 (Mount Pleasant, SC)
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, Sullivans Is, SC (4 miles away).
- Average last spring frostMar 1350% chance of a 32°F freeze after this date
- Average first fall frostNov 3050% chance of a 32°F freeze by this date
- Growing season (frost-free)262 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
72°F 55°F or warmer
24-hour average · latest 67°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of McClellanville 7 NE (37 mi).
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 29464 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 28 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 Sep 21–Oct 19
- Lettuce: fall transplant Oct 5–26
- Spinach: fall sowing Oct 5–26
- Bok choy / Asian greens: fall sowing Oct 5–19
- Arugula: fall sowing Oct 5–Nov 2
- Mustard greens: fall sowing Oct 5–19
- Cilantro: fall sowing Oct 5–19
- Dill: fall sowing Oct 5–19
- Strawberry (plants): fall transplant Sep 21–Oct 19
Coming up in the next 3 weeks
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 30: 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 19 |
| 50% (the "average" last frost) | Mar 13 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 30 |
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 11 |
| 50% (the "average" first frost) | Nov 30 |
| 90% (late: most years have frozen by now) | Dec 24 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 25 | Nov 16 |
| 32°F (freeze) | Mar 13 | Nov 30 |
| 28°F (hard freeze) | Mar 1 | Dec 16 |
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 29464
Dates count from your average last spring frost (Mar 13) and first fall frost (Nov 30). 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 16–30 | Mar 20–Apr 3 (transplant) | Aug 3–31 (transplant) |
| Pepper (sweet and hot) | Jan 2–16 | Mar 27–Apr 10 (transplant) | Aug 10–31 (transplant) |
| Eggplant | Jan 2–16 | Mar 27–Apr 10 (transplant) | Aug 10–31 (transplant) |
| Tomatillo | Jan 16–30 | Mar 20–Apr 3 (transplant) | – |
| Lettuce | Jan 16–30 | Feb 20–Mar 13 (transplant) Feb 13–Mar 27 (sow outdoors) | Oct 5–26 (transplant) Sep 21–Oct 19 (sowing) |
| Spinach | – | Jan 30–Feb 20 (sow outdoors) | Oct 5–26 (sowing) |
| Kale | Jan 16–30 | Feb 13–27 (transplant) Feb 13–27 (sow outdoors) | Sep 7–Oct 5 (transplant) Aug 24–Sep 21 (sowing) |
| Collards | Jan 16–30 | Feb 13–Mar 13 (transplant) Feb 13–Mar 13 (sow outdoors) | Sep 7–Oct 5 (transplant) Aug 24–Sep 21 (sowing) |
| Broccoli | Jan 2–16 | Feb 13–27 (transplant) | Aug 24–Sep 21 (transplant) |
| Cabbage | Jan 2–16 | Feb 13–27 (transplant) | Aug 24–Sep 21 (transplant) |
| Cauliflower | Jan 2–16 | Feb 27–Mar 13 (transplant) | Aug 24–Sep 21 (transplant) |
| Brussels sprouts | Dec 19–Jan 2 | Feb 13–27 (transplant) | Aug 10–31 (transplant) |
| Kohlrabi | Jan 16–30 | Feb 13–27 (transplant) Feb 13–27 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Bok choy / Asian greens | – | Feb 13–27 (sow outdoors) | Oct 5–19 (sowing) |
| Arugula | – | Feb 13–Mar 13 (sow outdoors) | Oct 5–Nov 2 (sowing) |
| Mustard greens | – | Feb 13–Mar 6 (sow outdoors) | Oct 5–19 (sowing) |
| Swiss chard | Jan 30–Feb 13 | Feb 27–Mar 20 (transplant) Feb 27–Mar 27 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Beet | – | Feb 13–Mar 13 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Carrot | – | Feb 20–Mar 20 (sow outdoors) | Sep 7–21 (sowing) |
| Radish | – | Feb 6–Mar 20 (sow outdoors) | Oct 19–Nov 2 (sowing) |
| Turnip | – | Feb 13–Mar 6 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Parsnip | – | Feb 20–Mar 13 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 16–Feb 13 (sow outdoors) | Sep 7–21 (sowing) |
| Onion (bulbing) | Dec 19–Jan 2 | Jan 30–Feb 13 (transplant) | – |
| Green onion / scallion | – | Jan 30–Feb 27 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Leek | Dec 19–Jan 2 | Feb 13–27 (transplant) | – |
| Garlic | – | – | Oct 19–Nov 16 (sowing) |
| Shallot | – | Jan 30–Feb 13 (transplant) | Oct 19–Nov 16 (sowing) |
| Potato | – | Feb 13–27 (transplant) | Aug 10–24 (transplant) |
| Sweet potato | – | Apr 3–17 (transplant) | – |
| Sweet corn | – | Mar 20–Apr 3 (sow outdoors) | – |
| Bean, bush (snap) | – | Mar 20–Apr 3 (sow outdoors) | Sep 7–21 (sowing) |
| Bean, pole | – | Mar 20–Apr 3 (sow outdoors) | – |
| Lima bean | – | Mar 27–Apr 10 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 3–24 (sow outdoors) | – |
| Cucumber | Feb 13–20 | Mar 20–Apr 3 (transplant) Mar 20–Apr 3 (sow outdoors) | Sep 7–21 (sowing) |
| Summer squash / zucchini | Feb 13–20 | Mar 20–Apr 3 (transplant) Mar 20–Apr 3 (sow outdoors) | Sep 7–21 (sowing) |
| Winter squash | Feb 13–20 | Mar 20–Apr 3 (transplant) Mar 20–Apr 3 (sow outdoors) | – |
| Pumpkin | – | Mar 20–Apr 3 (sow outdoors) | – |
| Watermelon | Feb 13–20 | Mar 27–Apr 10 (transplant) Mar 27–Apr 10 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 13–20 | Mar 27–Apr 10 (transplant) Mar 27–Apr 10 (sow outdoors) | – |
| Okra | Jan 30–Feb 13 | Mar 27–Apr 10 (transplant) Mar 27–Apr 10 (sow outdoors) | – |
| Celery | Dec 19–Jan 2 | Mar 20–27 (transplant) | – |
| Basil | Jan 30–Feb 13 | Mar 20–Apr 3 (transplant) Mar 20–Apr 3 (sow outdoors) | – |
| Cilantro | – | Feb 27–Mar 27 (sow outdoors) | Oct 5–19 (sowing) |
| Parsley | Jan 2–16 | Feb 27–Mar 13 (transplant) Feb 20–Mar 13 (sow outdoors) | – |
| Dill | – | Mar 13–27 (sow outdoors) | Oct 5–19 (sowing) |
| Sunflower | – | Mar 13–27 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 13–27 (transplant) | – |
| Rhubarb (crowns) | – | Feb 13–27 (transplant) | – |
| Strawberry (plants) | – | Feb 13–27 (transplant) | Sep 21–Oct 19 (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.
Where these numbers come from
Station: Sullivans Is, SC (NOAA GHCN-Daily ID USC00388405), elevation 5 ft, 4.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Charleston City, SC | 5 mi | Feb 4 | Dec 30 |
| Charleston Intl AP, SC | 12 mi | Mar 7 | Nov 27 |
| Summerville 4W, SC | 26 mi | Mar 22 | Nov 12 |
The average last-frost dates of these stations span 49 days, a rough guide to local variation. See data sources & methods.
Frost questions for 29464
When is the last frost in 29464?
The average (50% chance) last spring freeze of 32°F for ZIP 29464 is March 13. For a more cautious planting date, use March 30, when only 1 year in 10 still sees a later freeze.
When is the first frost in 29464?
The average first fall freeze is November 30. In 1 year in 10 it comes by November 11.
What hardiness zone is 29464?
ZIP 29464 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 29464 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
29482 Sullivan's Island 29401 Charleston 29424 Charleston 29403 Charleston 29466 Mount Pleasant 29425 Charleston 29451 Isle of Palms 29409 Charleston
Other ZIP codes in Charleston County
29401 29403 29404 29405 29406 29407 29409 29412 29414 29418 29424 29425 29426 29429 29438 29439 29449 29451 29455 29456 29458 29466 29470 29482 All Charleston County frost dates · South Carolina frost dates
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- 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.