Myrtle Beach, SC planting zone & frost dates
Myrtle Beach is in USDA hardiness zone 8b. The last spring frost usually comes around March 21 and the first fall frost around November 13, for a growing season of about 239 days.
Planting calendar for Myrtle Beach
Dates are counted from the average last spring frost (March 21) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Jan 24 – Feb 7 Transplant outdoors: Mar 28 – Apr 4 |
| Peppers | Start seeds indoors: Jan 10 – Jan 24 Transplant outdoors: Apr 4 – Apr 11 |
| Eggplant | Start seeds indoors: Jan 10 – Jan 24 Transplant outdoors: Apr 4 – Apr 11 |
| Broccoli | Start seeds indoors: Jan 10 – Jan 24 Transplant outdoors: Feb 21 – Mar 7 |
| Cabbage | Start seeds indoors: Jan 10 – Jan 24 Transplant outdoors: Feb 21 – Mar 7 |
| Onions (sets) | Plant outdoors: Feb 21 – Mar 7 |
| Peas | Sow outdoors: Feb 7 – Feb 21 |
| Spinach | Sow outdoors: Feb 7 – Feb 21 |
| Lettuce | Sow outdoors: Feb 21 – Mar 7 |
| Carrots | Sow outdoors: Feb 21 – Mar 7 |
| Potatoes | Plant outdoors: Feb 21 – Mar 7 |
| Beans | Sow outdoors: Mar 28 – Apr 4 |
| Sweet corn | Sow outdoors: Mar 28 – Apr 4 |
| Cucumbers | Sow outdoors: Mar 28 – Apr 4 |
| Squash & zucchini | Sow outdoors: Mar 28 – Apr 4 |
| Basil | Start seeds indoors: Feb 7 – Feb 21 Transplant outdoors: Mar 28 – Apr 4 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Sep 18 (8 weeks before the average first fall frost on Nov 13).
Useful for zone 8b gardens
- Seed starting kit with dome — to start seeds indoors before the last frost
- LED grow light for seedlings — stops leggy seedlings
- Frost cloth / plant covers — for late spring and early fall frosts
- Soil thermometer — warm-season crops need soil above 60°F
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Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Mar 2 | Mar 21 | Apr 7 |
| First 32°F frost in fall is before | Dec 3 | Nov 13 | Oct 31 |
How to read it: in spring there is a 10% chance of a frost after April 7, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 31. A hard freeze (28°F) usually ends around March 7.
Hardiness zone by ZIP code in Myrtle Beach
- 29572 zone 8b
- 29575 zone 8b
- 29577 zone 8b
- 29578 zone 8b
- 29579 zone 8b
- 29587 zone 8b
- 29588 zone 8b
Nearby cities
- Socastee zone 8b, last frost Mar 15
- Conway zone 8b, last frost Mar 15
- North Myrtle Beach zone 8b, last frost Mar 13
- Red Hill zone 8b, last frost Mar 26
- Florence zone 8b, last frost Mar 19
- Mount Pleasant zone 9a, last frost Mar 13
- Goose Creek zone 9a, last frost Mar 7
- North Charleston zone 9a, last frost Mar 7
Questions
What growing zone is Myrtle Beach, SC?
Myrtle Beach is in USDA Plant Hardiness Zone 8b (average extreme winter low 15°F to 20°F), according to the USDA 2023 map.
When is the last frost in Myrtle Beach?
The average last spring frost (32°F) in Myrtle Beach is March 21. There is still a 10% chance of frost until April 7.
When can I plant tomatoes in Myrtle Beach?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Mar 28 – Apr 4. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Myrtle Beach, SC (USC00386153), 9.4 km (5.8 mi) from the city center, elevation 12 m, based on 24 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.