Red Hill, SC planting zone & frost dates
Red Hill is in USDA hardiness zone 8b. The last spring frost usually comes around March 26 and the first fall frost around November 11, for a growing season of about 233 days.
Planting calendar for Red Hill
Dates are counted from the average last spring frost (March 26) 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 29 – Feb 12 Transplant outdoors: Apr 2 – Apr 9 |
| Peppers | Start seeds indoors: Jan 15 – Jan 29 Transplant outdoors: Apr 9 – Apr 16 |
| Eggplant | Start seeds indoors: Jan 15 – Jan 29 Transplant outdoors: Apr 9 – Apr 16 |
| Broccoli | Start seeds indoors: Jan 15 – Jan 29 Transplant outdoors: Feb 26 – Mar 12 |
| Cabbage | Start seeds indoors: Jan 15 – Jan 29 Transplant outdoors: Feb 26 – Mar 12 |
| Onions (sets) | Plant outdoors: Feb 26 – Mar 12 |
| Peas | Sow outdoors: Feb 12 – Feb 26 |
| Spinach | Sow outdoors: Feb 12 – Feb 26 |
| Lettuce | Sow outdoors: Feb 26 – Mar 12 |
| Carrots | Sow outdoors: Feb 26 – Mar 12 |
| Potatoes | Plant outdoors: Feb 26 – Mar 12 |
| Beans | Sow outdoors: Apr 2 – Apr 9 |
| Sweet corn | Sow outdoors: Apr 2 – Apr 9 |
| Cucumbers | Sow outdoors: Apr 2 – Apr 9 |
| Squash & zucchini | Sow outdoors: Apr 2 – Apr 9 |
| Basil | Start seeds indoors: Feb 12 – Feb 26 Transplant outdoors: Apr 2 – Apr 9 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Sep 16 (8 weeks before the average first fall frost on Nov 11).
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 9 | Mar 26 | Apr 9 |
| First 32°F frost in fall is before | Nov 26 | Nov 11 | Nov 1 |
How to read it: in spring there is a 10% chance of a frost after April 9, so that is a safe date for tender plants. In fall there is a 10% chance of frost before November 1. A hard freeze (28°F) usually ends around March 14.
Nearby cities
- Conway zone 8b, last frost Mar 15
- Socastee zone 8b, last frost Mar 15
- Myrtle Beach zone 8b, last frost Mar 21
- Florence zone 8b, last frost Mar 19
- North Myrtle Beach zone 8b, last frost Mar 13
- Sumter zone 8b, last frost Mar 24
- Goose Creek zone 9a, last frost Mar 7
- Hanahan zone 9a, last frost Mar 7
Questions
What growing zone is Red Hill, SC?
Red Hill 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 Red Hill?
The average last spring frost (32°F) in Red Hill is March 26. There is still a 10% chance of frost until April 9.
When can I plant tomatoes in Red Hill?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Apr 2 – Apr 9. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Mullins, SC (USC00386114), 21.7 km (13.5 mi) from the city center, elevation 34 m, based on 15 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.