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When to Plant Cumin in Greenwood County, SC

Cumin is a warm-season annual herb whose seeds are one of the most widely used spices globally. It requires a long, hot growing season of 3-4 months.

Greenwood County, South Carolina is in USDA Zone 7b. The average last spring frost is April 6 and the first fall frost is November 1, giving you a growing season of approximately 209 days.

At an elevation of 455 feet, Greenwood County receives approximately 51.1 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92ยฐF, providing good warmth for Cumin during the growing season. Clay soil retains moisture well for Cumin, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cumin root diseases.

Greenwood County, SC (Zone 7b) Long season
209 days
Last Spring Frost April 6
209 growing days
First Fall Frost November 1

Greenwood County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (50 days to spare)
Start indoors: Feb 21 Transplant: Mar 21 🍅 Harvest: Jul 4 – Sep 5
Recommended (50%) ✓ Fits season (48 days to spare)
Start indoors: Mar 2 Transplant: Mar 30 🍅 Harvest: Jul 13 – Sep 14
Safe Start (90%) ✓ Fits season (54 days to spare)
Start indoors: Mar 15 Transplant: Apr 12 🍅 Harvest: Jul 26 – Sep 27

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Cumin needs ~2,090 GDD — county provides 3,971 GDD Excellent fit

Cumin Planting Timeline โ€” Greenwood County, SC

Cumin Planting Calendar

Activity When Date Range
Start Indoors March 2 Mar 2 โ€“ Mar 16
Transplant Outdoors March 30 Mar 30 โ€“ Apr 13
Direct Sow March 23 Mar 23 โ€“ Apr 13
Fall Sowing August 23 Aug 23 โ€“ Sep 6
Harvest July 13 Jul 13 โ€“ Sep 14

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May โ€”
June โ€”
July Harvest
August Fall Sowing Harvest
September Fall Sowing Harvest
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

100โ€“120 days

Soil pH

6 โ€“ 8

USDA Zone

Zone 7b

Growing Season

209 days

Growing Tips for Greenwood County

Start seeds indoors 4 weeks before last frost. Transplant after all danger of frost. Harvest when seed heads turn brown. Requires consistent warmth for proper seed development.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Level Up Your Garden

Frequently Asked Questions

When should I plant Cumin in Greenwood County, SC?

Greenwood County is in Zone 7b with an average last frost of April 6. Plan your Cumin planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Greenwood County, SC?

Greenwood County, South Carolina is in USDA Hardiness Zone 7b. The average last spring frost is April 6 and first fall frost is November 1.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Greenwood County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Greenwood County, SC. Local conditions may vary. Last updated: April 2026.