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When to plant Radish in Crow Wing County, MN

In Crow Wing County, plant Radish in spring between April 28 and May 19, once soil temps hold above 50°F. Crow Wing County's last frost averages May 5, so be cautious and check the 10-day forecast before planting tender crops. For a fall crop, sow between July 11 and July 25 — roughly 22–35 days before the first frost on October 3.

When to Plant Radish in Crow Wing County, MN

Crow Wing County, Minnesota Zone 4a July

This month in Crow Wing County, Minnesota

Welcome to July in Zone 4a. These are the moves that will have the biggest impact on your growing season.

Avg. last frost May 5
Avg. first frost October 3
Soil temp (4") 70°F
Watering Low
Pest pressure Moderate
Daylight 15.3 hrs
  1. Plant your fall garden: radish

    Count back from your first frost (October 3) — these need to mature before the cold arrives.

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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.

Crow Wing County, Minnesota is in USDA Zone 4a. The average last spring frost is May 5 and the first fall frost is October 3, giving you a growing season of approximately 151 days.

At an elevation of 783 feet, Crow Wing County receives approximately 33.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Radish to ensure they mature before fall.

Crow Wing County, MN (Zone 4a) Moderate season
151 days
Last Spring Frost May 5
151 growing days
First Fall Frost October 3

Crow Wing County Soil Profile

Soil Type

Silt Loam

Soil pH

6-6.7

Drainage

Well Drained

Radish Planting Risk Windows

Early Start (70% safe) ✓ Fits season (103 days to spare)
Transplant: Apr 29 🍅 Harvest: May 27 – Jun 17
Recommended (50%) ✓ Fits season (102 days to spare)
Transplant: May 5 🍅 Harvest: Jun 2 – Jun 23
Safe Start (90%) ✓ Fits season (99 days to spare)
Transplant: May 19 🍅 Harvest: Jun 16 – Jul 7

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 Crow Wing County

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

Soil pH

Your soil pH (6.0–6.7) is within Radish's preferred range (6.0–7.0).

Soil Texture

The silt loam soil in Crow Wing County is excellent for Radish — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.0%) — Radish will thrive.

How to Plant Radish

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

Fall planting: Sow 12 weeks before your first frost date for a fall harvest.

Succession Planting Radish

8
successive plantings in your 151-day season

Sow every 2.4 weeks. Last sowing by Aug 29 to harvest before frost.

For a dedicated fall crop, sow by Jul 11.

Radish Water Budget

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

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 1.4" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 2.2" 0" ❄️ Dormant
Apr 3.3" 0" ❄️ Dormant
May 2.2" 3.3" 0" ✅ Rainfall sufficient
Jun 2.2" 3.9" 0" ✅ Rainfall sufficient
Jul 2.2" 4.2" 0" ✅ Rainfall sufficient
Aug 2.2" 3.3" 0" ✅ Rainfall sufficient
Sep 2.2" 3.2" 0" ✅ Rainfall sufficient
Oct 2.2" 2.8" 0" ✅ Rainfall sufficient
Nov 2.5" 0" ❄️ Dormant
Dec 1.7" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Crow Wing County). Supplement amounts are based on average rainfall — 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" — every day above 50°F 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 ~242 GDD — county provides 1,283 GDD Excellent fit

Radish Planting Timeline — Crow Wing County, MN

Radish Planting Calendar

Activity When Date Range
Direct Sow April 28 Apr 28 – May 19
Harvest May 26 May 26 – Jun 16
Fall Sowing July 11 Jul 11 – Jul 25

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

22–35 days

🧪 Soil pH

Needs 6–7 · Your soil: ideal

🗺️ USDA Zone

Zone 4a

📆 Growing Season

151 days in Crow Wing County

Growing Tips for Radish in Crow Wing County

Direct sow Radish outdoors after May 05 in Crow Wing County when soil has warmed and frost danger has passed.

Your generous 151.0-day season in Crow Wing 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 Crow Wing County, MN?

Crow Wing County is in Zone 4a with an average last frost of May 5. Plan your Radish planting based on this frost date — see the calendar above for exact timing.

What planting zone is Crow Wing County, MN?

Crow Wing County, Minnesota is in USDA Hardiness Zone 4a. The average last spring frost is May 5 and first fall frost is October 3.

When should I plant Radish in Crow Wing County, MN?

In Crow Wing County, MN, plant Radish after the last frost (around May 5) and before the first frost (around October 3). Best results when soil holds above 50°F.

What growing zone is Crow Wing County, MN for Radish?

Crow Wing County sits in USDA Zone 4a. Radish grows reliably in zones 2a through 11b, so it's a good fit here.

Can Radish grow in Crow Wing County's climate?

Yes — Radish grows well in Crow Wing County's temperate climate. Crow Wing County averages a 151-day frost-free season, with last frost around May 5 and first frost around October 3.

🌱

Your Crow Wing County Garden Planner — Free

A 22-page printable planner built for Crow Wing County (Zone 4a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Crow Wing County, MN. Local conditions may vary. Last updated: July 2026.

Sources & credits

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