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When to Plant Radish in Clay 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.

Clay County, Mississippi is in USDA Zone 7b. The average last spring frost is March 23 and the first fall frost is November 7, giving you a growing season of approximately 229 days.

At an elevation of 456 feet, Clay County receives approximately 61.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 88ยฐF, 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.

Clay County, MS (Zone 7b) Long season
229 days
Last Spring Frost March 23
229 growing days
First Fall Frost November 7

Clay County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (181 days to spare)
Transplant: Mar 15 🍅 Harvest: Apr 12 – May 3
Recommended (50%) ✓ Fits season (180 days to spare)
Transplant: Mar 23 🍅 Harvest: Apr 20 – May 11
Safe Start (90%) ✓ Fits season (179 days to spare)
Transplant: Apr 12 🍅 Harvest: May 10 – May 31

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
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Radish needs ~456 GDD — county provides 3,664 GDD Excellent fit

Radish Planting Timeline โ€” Clay County, MS

Radish Planting Calendar

Activity When Date Range
Direct Sow March 9 Mar 9 โ€“ Mar 30
Fall Sowing August 29 Aug 29 โ€“ Sep 12
Harvest April 6 Apr 6 โ€“ Apr 27

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Direct Sow
April Harvest
May โ€”
June โ€”
July โ€”
August Fall Sowing
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 7b

Growing Season

229 days

Growing Tips for Clay 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 Clay County, MS?

Clay County is in Zone 7b with an average last frost of March 23. Plan your Radish planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Clay County, MS?

Clay County, Mississippi is in USDA Hardiness Zone 7b. The average last spring frost is March 23 and first fall frost is November 7.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Clay 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 Clay County, MS. Local conditions may vary. Last updated: April 2026.