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When to Plant Radish in Wells County, IN

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.

Wells County, Indiana is in USDA Zone 5b. The average last spring frost is April 25 and the first fall frost is October 17, giving you a growing season of approximately 175 days.

At an elevation of 1,181 feet, Wells County receives approximately 30.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Radish during the growing season.

Wells County, IN (Zone 5b) Moderate season
175 days
Last Spring Frost April 25
175 growing days
First Fall Frost October 17

Wells County Soil Profile

Soil Type

Silt Loam

Soil pH

6.2-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (128 days to spare)
Transplant: Apr 17 🍅 Harvest: May 15 – Jun 5
Recommended (50%) ✓ Fits season (126 days to spare)
Transplant: Apr 25 🍅 Harvest: May 23 – Jun 13
Safe Start (90%) ✓ Fits season (122 days to spare)
Transplant: May 9 🍅 Harvest: Jun 6 – Jun 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
1.0″/week
Rainfall provides
0.7″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 900 gal / 100 sq ft
Radish needs ~435 GDD — county provides 2,668 GDD Excellent fit

Radish Planting Timeline โ€” Wells County, IN

Radish Planting Calendar

Activity When Date Range
Direct Sow April 11 Apr 11 โ€“ May 2
Fall Sowing August 8 Aug 8 โ€“ Aug 22
Harvest May 9 May 9 โ€“ May 30

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Direct Sow
May Direct Sow Harvest
June โ€”
July โ€”
August Fall Sowing
September โ€”
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 5b

Growing Season

175 days

Growing Tips for Wells 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 Wells County, IN?

Wells County is in Zone 5b with an average last frost of April 25. Plan your Radish planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Wells County, IN?

Wells County, Indiana is in USDA Hardiness Zone 5b. The average last spring frost is April 25 and first fall frost is October 17.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Wells County gardeners in Zone 5b 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 Wells County, IN. Local conditions may vary. Last updated: April 2026.