Root Vegetable

When to Plant Radishes in North Carolina

The fastest vegetable in the garden — some varieties are ready in just 25 days. Perfect for impatient gardeners and kids.

The Short Answer

North Carolina's three regions each support productive radish growing during the cool season, with the mountain region providing the longest window thanks to its consistently cool temperatures.

North Carolina Frost Dates

Your planting dates depend on which part of North Carolina you're in. Here are the frost date ranges by region:

Region Zones Last Frost (Spring) First Frost (Fall)
Mountains 5b, 6a, 6b Apr 25 - May 15 Sep 25 - Oct 10
Piedmont 7a, 7b Apr 1 - Apr 15 Oct 20 - Nov 5
Coastal Plain 7b, 8a Mar 15 - Apr 1 Nov 1 - Nov 15

Radishes Planting Schedule for North Carolina

Mountains (Zones 5b, 6a, 6b)

Average last frost: Apr 25 - May 15 · Average first frost: Sep 25 - Oct 10

Direct Sow
4 wks before frost
Fall Planting
6 wks before first frost

Piedmont (Zones 7a, 7b)

Average last frost: Apr 1 - Apr 15 · Average first frost: Oct 20 - Nov 5

Direct Sow
4 wks before frost
Fall Planting
6 wks before first frost

Coastal Plain (Zones 7b, 8a)

Average last frost: Mar 15 - Apr 1 · Average first frost: Nov 1 - Nov 15

Direct Sow
4 wks before frost
Fall Planting
6 wks before first frost

Growing Radishes in North Carolina

State-Specific Growing Tips

Mountains: sow March through May, August through October. Piedmont: sow September through April. Coastal: October through March. Succession plant every 2 weeks. NC State Extension recommends radishes as the ideal introductory vegetable.

Recommended Varieties for North Carolina

Cherry Belle, French Breakfast. Watermelon radish for fall. NC State variety data available.

Common Challenges in North Carolina

Bolting in warmth. Flea beetles. Minimal disease issues.

Growing Tips

Don't let them stay in the ground too long — they get pithy and hot. Succession plant every 2 weeks for continuous harvest.

Companion Planting

Plant radishes alongside these companions for better growth:

Peas Lettuce Carrots Spinach

The Bottom Line

Radishes can be grown successfully in North Carolina with proper attention to regional frost dates and local growing conditions. Timing varies across the state — Mountains gardeners work with a last frost around Apr 25 - May 15, while Coastal Plain sees frost end around Mar 15 - Apr 1. Choose varieties suited to your region, amend your soil based on its specific needs, and monitor for the pests and diseases most common in your area. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Radishes Growing Guide National planting guide with all states North Carolina Planting Calendar All plants for North Carolina Radishes in Alabama Alabama planting dates Radishes in Alaska Alaska planting dates Radishes in Arizona Arizona planting dates Radishes in Arkansas Arkansas planting dates
Note: All dates are based on NOAA 30-year Climate Normals and represent historical averages, not predictions for any specific year. Always check your local weather forecast before planting frost-sensitive crops. Learn about our data sources.

Last reviewed: March 29, 2026

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