Frost Dates for Saint Simons Island, GA 31522
Last spring frost February 19 · First fall frost December 9 · 293 frost-free days · USDA Zone 9a
ZIP 31522 has about 17,800 people.
Very long season: 293 frost-free days. Spring frost risk spans January 29–March 16 (46 days). Fall frost risk spans November 17–January 3 (47 days).
Frost probability for 31522
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | March 16 | February 19 | January 29 |
| Fall (first frost) | November 17 | December 9 | January 3 |
Dates come from NOAA 1971–2000 freeze probabilities at BRUNSWICK (15.9 km away); the 50% date is the median year.
Which crops fit a 293-day season in Saint Simons Island
In Saint Simons Island (293 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Jan 15 | Mar 5–Mar 12 | 251 | fits: 80 days to maturity, 251 available after Mar 5. | Aug 9 |
| Pepper | Jan 8 | Mar 5–Mar 12 | 251 | fits: 75 days to maturity, 251 available after Mar 5. | Aug 14 |
| Lettuce | Dec 25 | Jan 22–Jan 29 | 328 | two-plantings: Plant Jan 22 and again by Oct 18; both mature before Dec 16. | Oct 18 |
| Carrots | — | Jan 29–Feb 5 | 335 | fits: 70 days to maturity, 335 available after Jan 29. | Oct 7 |
| Cucumber | Jan 29 | Mar 5–Mar 12 | 265 | two-plantings: Plant Mar 5 and again by Sep 12; both mature before Nov 25. | Sep 12 |
| Beans | — | Feb 26–Mar 12 | 279 | two-plantings: Plant Feb 26 and again by Sep 19; both mature before Dec 2. | Sep 19 |
| Peas | — | Dec 25–Mar 5 | 356 | fits: 65 days to maturity, 356 available after Dec 25. | Sep 28 |
| Zucchini | Feb 5 | Mar 5–Mar 12 | 265 | two-plantings: Plant Mar 5 and again by Sep 17; both mature before Nov 25. | Sep 17 |
| Onion | Nov 27 | Jan 22–Feb 5 | 328 | fits: 100 days to maturity, 328 available after Jan 22. | — |
| Spinach | — | Dec 25–Feb 12 | 370 | two-plantings: Plant Dec 25 and again by Nov 6; both mature before Dec 30. | Nov 6 |
| Kale | Dec 11 | Jan 22–Feb 5 | 342 | two-plantings: Plant Jan 22 and again by Oct 22; both mature before Dec 30. | Oct 22 |
| Broccoli | Dec 25 | Jan 22–Feb 5 | 328 | fits: 80 days to maturity, 328 available after Jan 22. | Sep 13 |
| Cabbage | Dec 25 | Jan 22–Feb 5 | 342 | fits: 70 days to maturity, 342 available after Jan 22. | Oct 7 |
| Radish | — | Dec 25–Mar 19 | 356 | two-plantings: Plant Dec 25 and again by Nov 7; both mature before Dec 16. | Nov 7 |
| Beets | — | Dec 25–Mar 19 | 356 | two-plantings: Plant Dec 25 and again by Oct 8; both mature before Dec 16. | Oct 8 |
| Potatoes | — | Feb 5–Feb 12 | 314 | fits: 90 days to maturity, 314 available after Feb 5. | — |
| Garlic | — | Dec 9 | 398 | overwinter: Plant Dec 9 to Dec 30; harvest the following summer. | Dec 30 |
| Strawberry | — | Jan 15–Mar 12 | 349 | perennial: A perennial: plant Jan 15; it fruits from the following year and keeps producing for several years. | — |
| Corn | Jan 22 | Feb 26–Mar 5 | 265 | fits: 75 days to maturity, 265 available after Feb 26. | Aug 21 |
| Pumpkin | Feb 5 | Mar 5–Mar 5 | 258 | fits: 100 days to maturity, 258 available after Mar 5. | Jul 27 |
| Cauliflower | Jan 8 | Feb 12–Feb 26 | 307 | fits: 75 days to maturity, 307 available after Feb 12. | Sep 18 |
| Swiss Chard | Dec 25 | Feb 5–Feb 5 | 314 | two-plantings: Plant Feb 5 and again by Oct 8; both mature before Dec 16. | Oct 8 |
| Arugula | — | Dec 25–Mar 19 | 370 | two-plantings: Plant Dec 25 and again by Nov 6; both mature before Dec 30. | Nov 6 |
| Brussel Sprouts | Dec 25 | Jan 22–Feb 5 | 342 | fits: 100 days to maturity, 342 available after Jan 22. | Sep 7 |
| Butternut Squash | Feb 5 | Mar 5–Mar 12 | 258 | fits: 100 days to maturity, 258 available after Mar 5. | Jul 27 |
| Eggplant | Jan 1 | Mar 5–Mar 12 | 251 | fits: 70 days to maturity, 251 available after Mar 5. | Aug 19 |
| Okra | Jan 22 | Feb 26–Mar 5 | 272 | two-plantings: Plant Feb 26 and again by Sep 17; both mature before Nov 25. | Sep 17 |
| Basil | Jan 15 | Mar 12–Mar 12 | 258 | two-plantings: Plant Mar 12 and again by Sep 12; both mature before Nov 25. | Sep 12 |
| Cilantro | — | Jan 22–Feb 12 | 328 | two-plantings: Plant Jan 22 and again by Oct 13; both mature before Dec 16. | Oct 13 |
| Parsley | Dec 11 | Feb 26–Mar 5 | 293 | fits: 70 days to maturity, 293 available after Feb 26. | Sep 23 |
| Celery | Dec 11 | Feb 26–Mar 12 | 293 | fits: 120 days to maturity, 293 available after Feb 26. | Aug 4 |
| Scallions | Dec 11 | Jan 22–Feb 5 | 342 | two-plantings: Plant Jan 22 and again by Oct 17; both mature before Dec 30. | Oct 17 |
| Turnip | — | Jan 22–Feb 5 | 342 | two-plantings: Plant Jan 22 and again by Oct 27; both mature before Dec 30. | Oct 27 |
| Kohlrabi | — | Jan 8–Jan 22 | 356 | two-plantings: Plant Jan 8 and again by Oct 22; both mature before Dec 30. | Oct 22 |
| Bok Choy | Jan 22 | Feb 12–Feb 19 | 307 | two-plantings: Plant Feb 12 and again by Oct 18; both mature before Dec 16. | Oct 18 |
| Collards | Dec 11 | Jan 22–Feb 5 | 342 | two-plantings: Plant Jan 22 and again by Oct 17; both mature before Dec 30. | Oct 17 |
| Cantaloupe | Feb 5 | Mar 5–Mar 12 | 251 | fits: 85 days to maturity, 251 available after Mar 5. | Aug 4 |
| Chives | Nov 27 | Feb 26–Mar 5 | 307 | fits: 90 days to maturity, 307 available after Feb 26. | — |
| Dill | — | Dec 25–Mar 19 | 356 | two-plantings: Plant Dec 25 and again by Oct 8; both mature before Dec 16. | Oct 8 |
| Oregano | Dec 11 | Feb 26–Mar 5 | 307 | fits: 80 days to maturity, 307 available after Feb 26. | — |
| Rosemary | Nov 27 | Feb 26–Mar 5 | 293 | fits: 80 days to maturity, 293 available after Feb 26. | — |
| Sage | Dec 25 | Feb 26–Mar 5 | 307 | fits: 75 days to maturity, 307 available after Feb 26. | — |
| Thyme | Dec 11 | Feb 26–Mar 5 | 307 | fits: 90 days to maturity, 307 available after Feb 26. | — |
| Calendula | Jan 8 | Feb 5–Feb 19 | 314 | two-plantings: Plant Feb 5 and again by Oct 13; both mature before Dec 16. | Oct 13 |
| Cosmos | Jan 22 | Feb 19–Mar 5 | 279 | two-plantings: Plant Feb 19 and again by Sep 12; both mature before Nov 25. | Sep 12 |
| Lavender | Nov 27 | Feb 19–Mar 5 | 314 | fits: 90 days to maturity, 314 available after Feb 19. | — |
| Marigolds | Jan 8 | Feb 19–Feb 26 | 279 | two-plantings: Plant Feb 19 and again by Sep 22; both mature before Nov 25. | Sep 22 |
| Melons | Feb 5 | Mar 5–Mar 12 | 251 | fits: 85 days to maturity, 251 available after Mar 5. | Aug 4 |
| Mint | — | Feb 19–Mar 5 | 314 | fits: 90 days to maturity, 314 available after Feb 19. | — |
| Nasturtiums | Jan 22 | Feb 19–Feb 26 | 279 | two-plantings: Plant Feb 19 and again by Sep 17; both mature before Nov 25. | Sep 17 |
| Pole Beans | — | Feb 26–Mar 12 | 272 | fits: 65 days to maturity, 272 available after Feb 26. | Sep 7 |
| Spaghetti Squash | Feb 5 | Mar 5–Mar 12 | 258 | fits: 90 days to maturity, 258 available after Mar 5. | Aug 6 |
| Sunflowers | — | Feb 19–Mar 5 | 279 | fits: 70 days to maturity, 279 available after Feb 19. | Sep 2 |
| Tomatillos | Dec 25 | Feb 26–Mar 5 | 258 | fits: 75 days to maturity, 258 available after Feb 26. | Aug 14 |
| Watermelon | Feb 5 | Feb 26–Mar 5 | 258 | fits: 80 days to maturity, 258 available after Feb 26. | Aug 9 |
| Yellow Squash | Feb 5 | Mar 5–Mar 12 | 265 | two-plantings: Plant Mar 5 and again by Sep 17; both mature before Nov 25. | Sep 17 |
| Zinnias | Jan 22 | Feb 19–Mar 5 | 279 | two-plantings: Plant Feb 19 and again by Sep 12; both mature before Nov 25. | Sep 12 |
Month by month in Saint Simons Island
| Month | What to do |
|---|---|
| January | Start indoors: Eggplant (Jan 1), Calendula (Jan 8), Cauliflower (Jan 8), Marigolds (Jan 8), Pepper (Jan 8), Basil (Jan 15), +8 more. Direct sow from: Kohlrabi (Jan 8), Cilantro (Jan 22), Turnip (Jan 22), Carrots (Jan 29). Transplant from: Broccoli (Jan 22), Brussel Sprouts (Jan 22), Cabbage (Jan 22), Collards (Jan 22), Kale (Jan 22), Lettuce (Jan 22), +2 more. Plant: Strawberry (Jan 15). |
| February | Start indoors: Butternut Squash (Feb 5), Cantaloupe (Feb 5), Melons (Feb 5), Pumpkin (Feb 5), Spaghetti Squash (Feb 5), Watermelon (Feb 5), +2 more. Direct sow from: Potatoes (Feb 5), Sunflowers (Feb 19), Beans (Feb 26), Pole Beans (Feb 26). Transplant from: Calendula (Feb 5), Swiss Chard (Feb 5), Bok Choy (Feb 12), Cauliflower (Feb 12), Cosmos (Feb 19), Lavender (Feb 19), +15 more. Last frost around February 19. |
| March | Transplant from: Butternut Squash (Mar 5), Cantaloupe (Mar 5), Cucumber (Mar 5), Eggplant (Mar 5), Melons (Mar 5), Pepper (Mar 5), +6 more. |
| April | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| May | Harvest regularly to encourage production. Monitor for pests and disease. |
| June | Midsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall. |
| July | Last sowing dates: Butternut Squash (Jul 27), Pumpkin (Jul 27). |
| August | Last sowing dates: Cantaloupe (Aug 4), Celery (Aug 4), Melons (Aug 4), Spaghetti Squash (Aug 6), Tomato (Aug 9), Watermelon (Aug 9), +4 more. |
| September | Last sowing dates: Sunflowers (Sep 2), Brussel Sprouts (Sep 7), Pole Beans (Sep 7), Basil (Sep 12), Cosmos (Sep 12), Cucumber (Sep 12), +11 more. |
| October | Last sowing dates: Cabbage (Oct 7), Carrots (Oct 7), Beets (Oct 8), Dill (Oct 8), Swiss Chard (Oct 8), Calendula (Oct 13), +8 more. |
| November | Start indoors: Chives (Nov 27), Lavender (Nov 27), Onion (Nov 27), Rosemary (Nov 27). Last sowing dates: Arugula (Nov 6), Spinach (Nov 6), Radish (Nov 7). |
| December | Start indoors: Celery (Dec 11), Collards (Dec 11), Kale (Dec 11), Oregano (Dec 11), Parsley (Dec 11), Scallions (Dec 11), +8 more. Direct sow from: Garlic (Dec 9), Arugula (Dec 25), Beets (Dec 25), Dill (Dec 25), Peas (Dec 25), Radish (Dec 25), +1 more. First frost around December 9. Last sowing dates: Garlic (Dec 30). |
Frequently Asked Questions
What is the last frost date for Saint Simons Island, GA (ZIP 31522)?
The median last spring frost date for Saint Simons Island, GA (ZIP code 31522) is around February 19. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before January 29; one in ten it runs past March 16.
What is the first fall frost date in Saint Simons Island, GA?
The median first fall frost date for Saint Simons Island, GA is around December 9. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around November 17 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Saint Simons Island, GA?
The frost-free growing season in Saint Simons Island is about 293 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Saint Simons Island (293 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Saint Simons Island, GA?
Saint Simons Island, GA is in USDA hardiness zone 9a (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Saint Simons Island, GA?
Start tomatoes indoors Jan 15 and plant out Mar 5 in Saint Simons Island. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Saint Simons Island?
Two: plant Jan 22 and again by Oct 18; both mature before Dec 16.
When do I plant garlic in Saint Simons Island?
Dec 9 to Dec 30; it overwinters and is ready the following summer.
Can I get two tomato crops in Saint Simons Island?
Yes: plant out Mar 5 for a summer crop, and set out a second round of transplants by Aug 9 for a fall crop.
Nearby and related
- Frost dates for Brunswick, GA 31525 (11.2 mi)
- Frost dates for Saint Marys, GA 31558 (31.4 mi)
- Frost dates for Midway, GA 31320 (36.6 mi)
- Frost dates for Kingsland, GA 31548 (36.9 mi)
- Frost dates for Ludowici, GA 31316 (40.1 mi)
- When to plant in GA
- When to plant Peppers in GA
- When to plant Cucumbers in GA
- When to plant Zucchini in GA
- When to plant Butternut Squash in GA
- When to plant Basil in GA
- When to plant Sweet Corn in GA
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