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When to Plant Radish in Red Willow County, NE

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.

Red Willow County, Nebraska is in USDA Zone 5a. The average last spring frost is May 2 and the first fall frost is October 6, giving you a growing season of approximately 157 days.

At an elevation of 643 feet, Red Willow County receives approximately 21.5 inches of rainfall annually with predominantly loam soil. Summer highs average 86ยฐF, providing good warmth for Radish during the growing season.

Red Willow County, NE (Zone 5a) Moderate season
157 days
Last Spring Frost May 2
157 growing days
First Fall Frost October 6

Red Willow County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (106 days to spare)
Transplant: Apr 27 🍅 Harvest: May 25 – Jun 15
Recommended (50%) ✓ Fits season (108 days to spare)
Transplant: May 2 🍅 Harvest: May 30 – Jun 20
Safe Start (90%) ✓ Fits season (106 days to spare)
Transplant: May 14 🍅 Harvest: Jun 11 – Jul 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.

Soil Compatibility in Red Willow County

How your county's soil matches Radish's growing requirements.

Soil pH

Your soil pH (6.2โ€“7.8) overlaps with Radish's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The loam soil in Red Willow County is excellent for Radish โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.9%). Annual compost additions will help Radish.

How to Plant Radish

0.5"
Planting Depth
2"
Between Plants
6"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Radish

8
successive plantings in your 157-day season

Sow every 2.4 weeks. Last sowing by Sep 01 to harvest before frost.

For a dedicated fall crop, sow by Jul 28.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.6″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 10/10 โ€” consider drought-tolerant varieties and mulching

Monthly Watering Guide for Radish

Radish needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Radish Needs Rainfall You Supplement Action
Jan โ€” 1.3" 0" โ„๏ธ Dormant
Feb โ€” 1.4" 0" โ„๏ธ Dormant
Mar โ€” 1.9" 0" โ„๏ธ Dormant
Apr โ€” 2.3" 0" โ„๏ธ Dormant
May 2.2" 2.4" 0" โœ… Rainfall sufficient
Jun 2.2" 1.4" 0.8" ๐Ÿ’ง Light watering
Jul 2.2" 2" 0.2" ๐Ÿ’ง Light watering
Aug 2.2" 2.4" 0" โœ… Rainfall sufficient
Sep 2.2" 1.9" 0.3" ๐Ÿ’ง Light watering
Oct 2.2" 1.9" 0.3" ๐Ÿ’ง Light watering
Nov โ€” 1.3" 0" โ„๏ธ Dormant
Dec โ€” 1.4" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Mayโ€“Oct in Red Willow County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Radish Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" โ€” every day above 50ยฐF deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Radish needs ~413 GDD — county provides 2,276 GDD Excellent fit

Radish Planting Timeline โ€” Red Willow County, NE

Radish Planting Calendar

Activity When Date Range
Direct Sow April 18 Apr 18 โ€“ May 9
Harvest May 16 May 16 โ€“ Jun 6
Fall Sowing July 28 Jul 28 โ€“ Aug 11

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 Harvest
July Fall Sowing
August Fall Sowing
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.5"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

22โ€“35 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 5a

๐Ÿ“† Growing Season

157 days in Red Willow County

Growing Tips for Radish in Red Willow County

Direct sow Radish outdoors after May 02 in Red Willow County when soil has warmed and frost danger has passed.

Your generous 157.0-day season in Red Willow County allows multiple plantings of Radish. Sow every 11.0 days for continuous harvest.

Common pests for Radish in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Radish in Red Willow County, NE?

Red Willow County is in Zone 5a with an average last frost of May 2. Plan your Radish planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Red Willow County, NE?

Red Willow County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is May 2 and first fall frost is October 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Red Willow County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

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 Red Willow County, NE. Local conditions may vary. Last updated: April 2026.