When to Plant Turnips in South Carolina
Published: April 24, 2026
South Carolina gardeners in Zone 7b have a 38-week growing season for turnip (March 1 to November 22). South Carolina's spring and fall windows both work well for turnip — some gardeners plant both successions for a long harvest. This guide gives exact dates for South Carolina based on your local frost calendar.
Turnip Planting Dates for South Carolina
| Start seeds indoors | Year-round |
| Last frost (average) | March 1 |
| Direct sow outdoors | February 8–18 |
| Expect first harvest | March 15 – April 9 |
| Fall crop start | September 27–October 7 |
| Fall harvest | November 1 |
| First fall frost (average) | November 22 |
Dates above assume Zone 7b, the most common zone in South Carolina. Gardeners in cooler Columbia (Zone 7b) plant 1–2 weeks later; warmer Charleston (Zone 9a) can plant 1–2 weeks earlier.
⚠ Direct sow turnips 2–4 weeks before last frost for spring crop. Best planted in late summer (6–8 weeks before first fall frost) for fall harvest — frost sweetens the roots. Fast-growing: some varieties ready in just 35 days.
Growing Turnips in South Carolina's Climate
South Carolina's moderate Zone 7b climate is well-suited to turnip with minimal special accommodation. The standard transplant calendar works as written, and harvest windows line up with what seed packets recommend without adjustment.
Succession planting extends your turnip harvest significantly in South Carolina. A second planting 3 to 4 weeks after the first gives you a backup in case of pest pressure and extends the total harvest window into early fall.
Common turnip pests to watch for in South Carolina include Flea Beetle and Aphid. The first line of defense is companion planting: Pea and Mint planted nearby discourage several of these pests by confusing host-plant identification or repelling adults before they can lay eggs. Weekly garden walks in the early morning catch problems when they're still manageable.
Turnip Garden Calendar for South Carolina
| Month | Task | Notes |
|---|---|---|
| January | — | Dormant season |
| February | Direct sow seeds | Sow seeds 1/4–1/2 inch deep, 4 inches apart |
| March | First harvest window opens | Turnip begins producing 35–60 days after transplant |
| April | — | Dormant season |
| May ← | Watch for bolting | Harvest promptly; spring heat arrives quickly |
| June | — | Dormant season |
| July | — | Dormant season |
| August | — | Dormant season |
| September | Fall crop planting | Transplant or direct sow for fall harvest before frost |
| October | — | Dormant season |
| November | First frost approaches | Harvest remaining turnip; cover plants on frost nights |
| December | — | Dormant season |
Turnip Growing Tips for South Carolina Gardeners
- •Thin seedlings to 4-inch spacing when plants are 3 inches tall — crowded turnips produce small woody roots.
- •Both roots AND greens are edible — harvest baby turnip greens 4 weeks after sowing, roots 5–9 weeks.
- •South Carolina's moderate climate supports succession planting — sow new transplants or seeds every 3 weeks during spring to extend the harvest window into fall.
- •Fall turnips are sweetest — plant 8 weeks before first frost and let cold weather convert starches to sugars.
Companion Planting for Turnips in South Carolina
In South Carolina's moderate climate, planting turnip with Pea and Mint helps deter pests and improve soil. Avoid planting near Potato and Radish, which inhibit turnip growth through root chemistry or shared pest pressure. See the full turnip companion planting guide for the complete list.
Turnips Planting Dates by City in South Carolina
Top cities in South Carolina — select for city-level frost dates and planting calendars.
Frequently Asked Questions
When should I plant turnip in South Carolina?
In South Carolina (Zone 7b), start turnip seeds indoors around Year-round and transplant outdoors around null — 0 weeks after the state's average last frost of March 1.
What is the last frost date in South Carolina?
South Carolina's average last frost date is March 1 in the state's most common Zone 7b. Frost dates vary by city — higher elevations and northern counties run 1 to 3 weeks later than the state average. See the city list below for city-level frost dates.
Can I grow turnip year-round in South Carolina?
turnip is a cool-season crop in South Carolina, with spring and fall windows. Summer heat bolts the plants before they can produce a harvestable crop. Succession planting every 2–3 weeks stretches the harvest window.
What turnip varieties grow best in South Carolina?
For South Carolina's Zone 7b, consult a local nursery or extension office for turnips variety recommendations.
When do I start turnip seeds indoors in South Carolina?
Turnip does not need indoor starting in South Carolina — direct sow around February 8–18 once soil reaches 40°F. Indoor starting is not recommended for this crop because turnip transplants poorly.