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When to Plant Radish in Hempstead County, AR

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.

Hempstead County, Arkansas is in USDA Zone 7b. The average last spring frost is March 21 and the first fall frost is November 12, giving you a growing season of approximately 236 days.

At an elevation of 1,302 feet, Hempstead County receives approximately 48.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88ยฐF, providing good warmth for Radish during the growing season.

Hempstead County, AR (Zone 7b) Long season
236 days
Last Spring Frost March 21
236 growing days
First Fall Frost November 12

Hempstead County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (184 days to spare)
Transplant: Mar 12 🍅 Harvest: Apr 9 – Apr 30
Recommended (50%) ✓ Fits season (187 days to spare)
Transplant: Mar 21 🍅 Harvest: Apr 18 – May 9
Safe Start (90%) ✓ Fits season (180 days to spare)
Transplant: Apr 14 🍅 Harvest: May 12 – Jun 2

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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 287 gal / 100 sq ft
Radish needs ~456 GDD — county provides 3,776 GDD Excellent fit

Radish Planting Timeline โ€” Hempstead County, AR

Radish Planting Calendar

Activity When Date Range
Direct Sow March 7 Mar 7 โ€“ Mar 28
Fall Sowing September 3 Sep 3 โ€“ Sep 17
Harvest April 4 Apr 4 โ€“ Apr 25

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 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 7b

Growing Season

236 days

Growing Tips for Hempstead 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 Hempstead County, AR?

Hempstead County is in Zone 7b with an average last frost of March 21. Plan your Radish planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Hempstead County, AR?

Hempstead County, Arkansas is in USDA Hardiness Zone 7b. The average last spring frost is March 21 and first fall frost is November 12.

๐ŸŒฑ

Plan Your Garden with Confidence

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

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Free download. Plan your entire garden season in minutes.

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