Root Vegetable

When to Plant Radishes in Alabama

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

The Short Answer

In Alabama, soil conditions are an important factor for radishes. Red clay soils in north, sandy loam in south. Amend with compost for drainage in clay areas. Direct sow 4 weeks before your last frost date. Radishes can also be planted in fall, 6 weeks before your first frost.

Alabama Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Alabama 7a, 7b Mar 25 - Apr 10 Oct 20 - Nov 5
Central Alabama 7b, 8a Mar 15 - Apr 1 Nov 1 - Nov 15
Southern Alabama 8a, 8b Feb 28 - Mar 15 Nov 10 - Nov 25

Radishes Planting Schedule for Alabama

Northern Alabama (Zones 7a, 7b)

Average last frost: Mar 25 - Apr 10 · Average first frost: Oct 20 - Nov 5

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

Central Alabama (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

Southern Alabama (Zones 8a, 8b)

Average last frost: Feb 28 - Mar 15 · Average first frost: Nov 10 - Nov 25

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

Growing Radishes in Alabama

Radishes in Alabama's Climate

Radishes are a cool-season sprint in warm climates — sow from October through February and harvest before spring warmth triggers bolting. Succession plant every 2 weeks during the cool window for multiple harvests. The quick maturity (22-30 days) means you can fit several rounds into even a short cool season.

Soil Considerations for Alabama

Red clay soils in north, sandy loam in south. Amend with compost for drainage in clay areas. Loose, well-drained soil is especially important for radishes since the edible portion grows underground. If your soil is heavy clay, consider raised beds.

Alabama Climate & Growing Season

Long growing season. Hot, humid summers. Mild winters allow for fall and winter gardening in southern regions. Radishes can handle frost well, which is an advantage in Alabama's climate. You can push planting dates earlier in spring and extend into fall.

Growing season length varies across Alabama: Northern Alabama (7a, 7b) has a last frost around Mar 25 - Apr 10, while Southern Alabama (8a, 8b) sees frost end around Feb 28 - Mar 15. This difference matters for radishes — but radishes handle frost well, so the timing difference is less critical.

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 across Alabama, but your exact planting dates depend on which region you're in. Northern Alabama gardeners should plan around a Mar 25 - Apr 10 last frost, while those in Southern Alabama can typically plant earlier. 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 Alabama Planting Calendar All plants for Alabama 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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