South Carolina Gardening Guide — Planting Zones, Frost Dates & Soil

Frost dates & zones

Know your region. Know your calendar.

South Carolina spans USDA zones 7a–9a. Verify your exact zone and frost dates with your county Extension office.

Upstate

South Carolina Upstate

Zones

7a–7b

Last frost

Apr 1–Apr 15

First frost

Oct 15–Nov 1

Season

Blue Ridge foothills and Piedmont plateau

Blue Ridge foothills and Piedmont plateau. Shorter season than the Midlands. Good for cool-season crops in spring and fall. Watch for late frosts near the mountains.

Midlands

South Carolina Midlands

Zones

7b–8a

Last frost

Mar 15–Apr 1

First frost

Nov 1–Nov 15

Season

Columbia basin and central plateau

Columbia basin and central plateau. Long, hot summers favor heat-tolerant crops. Two full planting seasons. Humid conditions require good air circulation to prevent fungal disease.

Coastal plain

South Carolina Coastal plain

Zones

8b–9a

Last frost

Feb 15–Mar 1

First frost

Nov 15–Dec 1

Season

Longest growing season in the Carolinas

Longest growing season in the Carolinas. Sandy, well-drained soil is ideal for root vegetables and sweet potatoes. Hurricane season (June–Nov) creates unpredictability in the fall garden.

Look up your exact zone by ZIP — USDA Plant Hardiness Zone Map

What grows well here

South Carolina's proven performers.

Sweet potatoes Tomatoes Collards Okra Peaches Muscadines Peppers Squash Watermelon

Clemson Extension publishes county-specific variety recommendations and planting calendars tailored to SC's three growing regions.

County-specific variety recommendations from South Carolina Extension →

Know your soil

Test it. Don't guess.

South Carolina soils range from clay-heavy Piedmont Ultisols in the Upstate to sandy Coastal Plain Entisols near the coast. The Midlands have a mix of both. Most SC soils are naturally acidic and benefit from lime applications based on soil test results. Clemson Extension offers year-round soil testing.

Map your soil type with USDA Web Soil Survey →

Free soil testing

Free or low-cost soil testing available through your county Extension office

Results include specific lime and fertilizer recommendations

Most states offer testing April through fall — fees apply in winter

Results typically returned within 10 business days

Find SC soil testing

Next steps

Where do you want to go next?

Preserve what you grow

Learn to can, ferment, and store.

South Carolina Extension offers food preservation workshops — and NWS has the full canning guides.

Food Independence

Get the checklist

SC gardening checklist by season.

Spring prep, frost protection, soil test timing, and compost setup.

SC Checklists