Spartanburg, SC planting zone & frost dates
Spartanburg is in USDA hardiness zone 8a. The last spring frost usually comes around April 8 and the first fall frost around November 1, for a growing season of about 206 days.
Planting calendar for Spartanburg
Dates are counted from the average last spring frost (April 8) 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: Feb 11 – Feb 25 Transplant outdoors: Apr 15 – Apr 22 |
| Peppers | Start seeds indoors: Jan 28 – Feb 11 Transplant outdoors: Apr 22 – Apr 29 |
| Eggplant | Start seeds indoors: Jan 28 – Feb 11 Transplant outdoors: Apr 22 – Apr 29 |
| Broccoli | Start seeds indoors: Jan 28 – Feb 11 Transplant outdoors: Mar 11 – Mar 25 |
| Cabbage | Start seeds indoors: Jan 28 – Feb 11 Transplant outdoors: Mar 11 – Mar 25 |
| Onions (sets) | Plant outdoors: Mar 11 – Mar 25 |
| Peas | Sow outdoors: Feb 25 – Mar 11 |
| Spinach | Sow outdoors: Feb 25 – Mar 11 |
| Lettuce | Sow outdoors: Mar 11 – Mar 25 |
| Carrots | Sow outdoors: Mar 11 – Mar 25 |
| Potatoes | Plant outdoors: Mar 11 – Mar 25 |
| Beans | Sow outdoors: Apr 15 – Apr 22 |
| Sweet corn | Sow outdoors: Apr 15 – Apr 22 |
| Cucumbers | Sow outdoors: Apr 15 – Apr 22 |
| Squash & zucchini | Sow outdoors: Apr 15 – Apr 22 |
| Basil | Start seeds indoors: Feb 25 – Mar 11 Transplant outdoors: Apr 15 – Apr 22 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Sep 6 (8 weeks before the average first fall frost on Nov 1).
Useful for zone 8a 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 20 | Apr 8 | Apr 23 |
| First 32°F frost in fall is before | Nov 14 | Nov 1 | Oct 17 |
How to read it: in spring there is a 10% chance of a frost after April 23, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 17. A hard freeze (28°F) usually ends around March 24.
Hardiness zone by ZIP code in Spartanburg
- 29301 zone 8a
- 29302 zone 8a
- 29303 zone 8a
- 29304 zone 8a
- 29305 zone 8a
- 29306 zone 8a
- 29307 zone 8a
- 29319 zone 8a
Nearby cities
- Greer zone 8b, last frost Mar 28
- Gaffney zone 8a, last frost Apr 20
- Five Forks zone 8a, last frost Mar 28
- Taylors zone 8a, last frost Mar 28
- Simpsonville zone 8a, last frost Mar 29
- Wade Hampton zone 8a, last frost Mar 16
- Mauldin zone 8a, last frost Mar 28
- Greenville zone 8b, last frost Mar 28
Questions
What growing zone is Spartanburg, SC?
Spartanburg is in USDA Plant Hardiness Zone 8a (average extreme winter low 10°F to 15°F), according to the USDA 2023 map.
When is the last frost in Spartanburg?
The average last spring frost (32°F) in Spartanburg is April 8. There is still a 10% chance of frost until April 23.
When can I plant tomatoes in Spartanburg?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Apr 15 – Apr 22. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Spartanburg 3 Sse, SC (USC00388188), 4.9 km (3.0 mi) from the city center, elevation 186 m, based on 29 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.