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When to Plant Radish in Minnesota

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.

Minnesota spans USDA hardiness zones 3a, 3b, 4a, 4b (with planting data available), so planting dates vary by your location within the state. Click your zone below for the most accurate dates.

Find Your County

Click your county for exact Radish planting dates based on your local frost dates.

Radish Planting Calendar for Minnesota

Zone 3a ~123 day growing season · Full guide →

Last frost: May 15 · First frost: September 15 · 123 day season

Activity When Date Range
Direct Sow May 8 May 8 – May 29
Fall Sowing June 23 Jun 23 – Jul 7
Harvest June 5 Jun 5 – Jun 26
Zone 3b ~135 day growing season · Full guide →

Last frost: May 10 · First frost: September 22 · 135 day season

Activity When Date Range
Direct Sow May 3 May 3 – May 24
Fall Sowing June 30 Jun 30 – Jul 14
Harvest May 31 May 31 – Jun 21
Zone 4a ~145 day growing season · Full guide →

Last frost: May 6 · First frost: September 28 · 145 day season

Activity When Date Range
Direct Sow April 29 Apr 29 – May 20
Fall Sowing July 6 Jul 6 – Jul 20
Harvest May 27 May 27 – Jun 17
Zone 4b ~155 day growing season · Full guide →

Last frost: May 1 · First frost: October 3 · 155 day season

Activity When Date Range
Direct Sow April 24 Apr 24 – May 15
Fall Sowing July 11 Jul 11 – Jul 25
Harvest May 22 May 22 – Jun 12

Growing Tips for Minnesota

Direct sow every 1-2 weeks for continuous harvest. Do not transplant. Harvest spring radishes promptly to prevent them from becoming pithy and hot.

Frequently Asked Questions

When should I plant Radish in Minnesota?

Planting dates for Radish in Minnesota depend on your USDA zone. Minnesota spans zones 3a, 3b, 4a, 4b. Check the planting calendar above for your specific zone's frost dates and planting windows.

What zone is Minnesota for planting?

Minnesota contains USDA hardiness zones 3a, 3b, 4a, 4b. Your specific zone depends on your location within the state — northern and higher-elevation areas are in colder zones, while southern and coastal areas are warmer.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Last updated: April 2026.