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When to Plant Radish in Jefferson Davis County, MS

Radishes are one of the fastest-growing vegetables, with some varieties ready in under a month. They come in round, elongated, and large winter types.

Jefferson Davis County, Mississippi is in USDA Zone 8a. The average last spring frost is March 8 and the first fall frost is November 19, giving you a growing season of approximately 256 days.

At an elevation of 126 feet, Jefferson Davis County receives approximately 59.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 93ยฐF, providing good warmth for Radish during the growing season. Clay soil retains moisture well for Radish, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Radish root diseases.

Jefferson Davis County, MS (Zone 8a) Long season
256 days
Last Spring Frost March 8
256 growing days
First Fall Frost November 19

Jefferson Davis County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (208 days to spare)
Transplant: Mar 1 🍅 Harvest: Mar 29 – Apr 19
Recommended (50%) ✓ Fits season (207 days to spare)
Transplant: Mar 8 🍅 Harvest: Apr 5 – Apr 26
Safe Start (90%) ✓ Fits season (202 days to spare)
Transplant: Mar 27 🍅 Harvest: Apr 24 – May 15

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
1.0″/week
Rainfall provides
1.0″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 58 gal / 100 sq ft
Radish needs ~563 GDD — county provides 5,056 GDD Excellent fit

Radish Planting Timeline โ€” Jefferson Davis County, MS

Radish Planting Calendar

Activity When Date Range
Direct Sow February 22 Feb 22 โ€“ Mar 15
Fall Sowing September 10 Sep 10 โ€“ Sep 24
Harvest March 22 Mar 22 โ€“ Apr 12

Plant 0.5" deep ยท 2" apart ยท Rows 6" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

22โ€“35 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 8a

Growing Season

256 days

Growing Tips for Jefferson Davis County

Direct sow every 1-2 weeks for continuous harvest. Do not transplant. Harvest spring radishes promptly to prevent them from becoming pithy and hot.

Companion Planting

Good Companions

Avoid Planting Near

  • Hyssop

Level Up Your Garden

Frequently Asked Questions

When should I plant Radish in Jefferson Davis County, MS?

Jefferson Davis County is in Zone 8a with an average last frost of March 8. Plan your Radish planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Jefferson Davis County, MS?

Jefferson Davis County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 8 and first fall frost is November 19.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Jefferson Davis County gardeners in Zone 8a 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 Jefferson Davis County, MS. Local conditions may vary. Last updated: April 2026.