When to Plant Pumpkins in South Carolina
Published: April 24, 2026
South Carolina gardeners in Zone 7b have a 38-week growing season for pumpkin (March 1 to November 22). The moderate climate supports a full warm-season crop plus a single main harvest. This guide gives exact dates for South Carolina based on your local frost calendar.
Pumpkin Planting Dates for South Carolina
| Start seeds indoors | February 8–15 |
| Last frost (average) | March 1 |
| Transplant outdoors | March 8–18 |
| Direct sow outdoors | March 8–18 |
| Expect first harvest | May 22 – June 16 |
| 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.
⚠ Count back 75–100 days from desired harvest date. For Halloween harvest, plant late June to mid-July. Plant 1–2 weeks after last frost.
Growing Pumpkins in South Carolina's Climate
South Carolina's moderate Zone 7b climate is well-suited to pumpkin 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 pumpkin 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 pumpkin pests to watch for in South Carolina include Squash Vine Borer and Squash Bug. The first line of defense is companion planting: Corn and Bush Bean 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.
Pumpkin Garden Calendar for South Carolina
| Month | Task | Notes |
|---|---|---|
| January | — | Dormant season |
| February | Start seeds indoors | Use grow lights; warm soil to 70–75°F for best germination |
| March | Transplant outdoors | Soil temp must be 60°F+; nighttime lows above 50°F |
| April | — | Dormant season |
| May | First harvest window opens | Pumpkin begins producing 75–100 days after transplant |
| June ← | Peak growth; water 1 inch/week | Monitor for pests daily; stake or support as needed |
| July | Continue care | Consistent watering; remove yellow leaves |
| August | — | Dormant season |
| September | — | Dormant season |
| October | — | Dormant season |
| November | First frost approaches | Harvest remaining pumpkin; cover plants on frost nights |
| December | — | Dormant season |
Pumpkin Growing Tips for South Carolina Gardeners
- •For Halloween pumpkins, count back 75–100 days from October 31 — plant between late June and mid-July in most climates.
- •Plant on hills or mounds to warm soil and improve drainage; two plants per hill is plenty.
- •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.
- •Rotate pumpkins away from squash, cucumber, and melon beds on a 3-year cycle to break disease cycles.
Companion Planting for Pumpkins in South Carolina
In South Carolina's moderate climate, planting pumpkin with Corn and Bush Bean helps deter pests and improve soil. Avoid planting near Potato and Summer Squash, which inhibit pumpkin growth through root chemistry or shared pest pressure. See the full pumpkin companion planting guide for the complete list.
Pumpkins 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 pumpkin in South Carolina?
In South Carolina (Zone 7b), start pumpkin seeds indoors around February 8–15 and transplant outdoors around March 8–18 — 1 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 pumpkin year-round in South Carolina?
Not year-round — South Carolina's cold season stops pumpkin production. The pumpkin season runs March 1 to November 22, roughly 38 weeks.
What pumpkin varieties grow best in South Carolina?
For South Carolina's Zone 7b, consult a local nursery or extension office for pumpkins variety recommendations.
When do I start pumpkin seeds indoors in South Carolina?
Start pumpkin seeds indoors in South Carolina around February 8–15, which is 3 weeks before the state's average last frost of March 1. Use grow lights and keep soil temperatures at 70–75°F for fastest germination.