North Myrtle Beach, SC planting zone & frost dates
North Myrtle Beach is in USDA hardiness zone 8b. The last spring frost usually comes around March 13 and the first fall frost around November 20, for a growing season of about 255 days.
Planting calendar for North Myrtle Beach
Dates are counted from the average last spring frost (March 13) 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 16 – Jan 30 Transplant outdoors: Mar 20 – Mar 27 |
| Peppers | Start seeds indoors: Jan 2 – Jan 16 Transplant outdoors: Mar 27 – Apr 3 |
| Eggplant | Start seeds indoors: Jan 2 – Jan 16 Transplant outdoors: Mar 27 – Apr 3 |
| Broccoli | Start seeds indoors: Jan 2 – Jan 16 Transplant outdoors: Feb 13 – Feb 27 |
| Cabbage | Start seeds indoors: Jan 2 – Jan 16 Transplant outdoors: Feb 13 – Feb 27 |
| Onions (sets) | Plant outdoors: Feb 13 – Feb 27 |
| Peas | Sow outdoors: Jan 30 – Feb 13 |
| Spinach | Sow outdoors: Jan 30 – Feb 13 |
| Lettuce | Sow outdoors: Feb 13 – Feb 27 |
| Carrots | Sow outdoors: Feb 13 – Feb 27 |
| Potatoes | Plant outdoors: Feb 13 – Feb 27 |
| Beans | Sow outdoors: Mar 20 – Mar 27 |
| Sweet corn | Sow outdoors: Mar 20 – Mar 27 |
| Cucumbers | Sow outdoors: Mar 20 – Mar 27 |
| Squash & zucchini | Sow outdoors: Mar 20 – Mar 27 |
| Basil | Start seeds indoors: Jan 30 – Feb 13 Transplant outdoors: Mar 20 – Mar 27 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Sep 25 (8 weeks before the average first fall frost on Nov 20).
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 | Feb 20 | Mar 13 | Mar 31 |
| First 32°F frost in fall is before | Dec 16 | Nov 20 | Nov 4 |
How to read it: in spring there is a 10% chance of a frost after March 31, so that is a safe date for tender plants. In fall there is a 10% chance of frost before November 4. A hard freeze (28°F) usually ends around February 26.
Hardiness zone by ZIP code in North Myrtle Beach
- 29582 zone 8b
- 29597 zone 8b
- 29598 zone 8b
Nearby cities
- Myrtle Beach zone 8b, last frost Mar 21
- Socastee zone 8b, last frost Mar 15
- Conway zone 8b, last frost Mar 15
- 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 North Myrtle Beach, SC?
North 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 North Myrtle Beach?
The average last spring frost (32°F) in North Myrtle Beach is March 13. There is still a 10% chance of frost until March 31.
When can I plant tomatoes in North Myrtle Beach?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Mar 20 – Mar 27. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station N Myrtle Bch Ap, SC (USW00093718), 4.1 km (2.5 mi) from the city center, elevation 10 m, based on 19 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.