Cool-Season Vegetable

When to Plant Lettuce in Indiana

Fast-growing and forgiving. Plant in spring and fall for a nearly year-round supply of fresh salad greens.

The Short Answer

Lettuce are cold-tolerant and do well in Indiana's humid climate. You can direct sow 4 weeks before your last frost — that's as early as Apr 25 - May 10 in Northern Indiana. Indiana gardeners can also plant a fall crop. Clay-heavy soils common statewide. Rich but can have drainage issues. Raised beds help with heavy...

Indiana Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Indiana 5b, 6a Apr 25 - May 10 Oct 1 - Oct 15
Central Indiana 6a, 6b Apr 15 - May 1 Oct 10 - Oct 25
Southern Indiana 6b Apr 10 - Apr 25 Oct 15 - Nov 1

Lettuce Planting Schedule for Indiana

Northern Indiana (Zones 5b, 6a)

Average last frost: Apr 25 - May 10 · Average first frost: Oct 1 - Oct 15

Start Seeds Indoors
4 wks before frost
Transplant Outside
2 wks before frost
Direct Sow
4 wks before frost
Fall Planting
8 wks before first frost

Central Indiana (Zones 6a, 6b)

Average last frost: Apr 15 - May 1 · Average first frost: Oct 10 - Oct 25

Start Seeds Indoors
4 wks before frost
Transplant Outside
2 wks before frost
Direct Sow
4 wks before frost
Fall Planting
8 wks before first frost

Southern Indiana (Zones 6b)

Average last frost: Apr 10 - Apr 25 · Average first frost: Oct 15 - Nov 1

Start Seeds Indoors
4 wks before frost
Transplant Outside
2 wks before frost
Direct Sow
4 wks before frost
Fall Planting
8 wks before first frost

Growing Lettuce in Indiana

Lettuce in Indiana's Climate

Lettuce grows well in spring and fall but bolts when summer temperatures consistently exceed 80°F. Direct sow 4 weeks before your last frost and succession plant every 2 weeks until mid-May. Resume in August for fall harvest. Summer lettuce is possible with heat-tolerant varieties and afternoon shade, but expect shorter-lived plantings.

Soil Considerations for Indiana

Clay-heavy soils common statewide. Rich but can have drainage issues. Raised beds help with heavy clay.

Indiana Climate & Growing Season

Four seasons. Hot, humid summers. Adequate rainfall for most crops. Occasional late spring frosts catch gardeners off guard.

Growing season length varies across Indiana: Northern Indiana (5b, 6a) has a last frost around Apr 25 - May 10, while Southern Indiana (6b) sees frost end around Apr 10 - Apr 25. This difference matters for lettuce — adjust your planting dates to match your specific region.

Growing Tips

Succession plant every 2-3 weeks for continuous harvest. Shade cloth extends the season into warmer months.

Companion Planting

Plant lettuce alongside these companions for better growth:

Carrots Radishes Strawberries Chives

The Bottom Line

Lettuce can be grown successfully across Indiana, but your exact planting dates depend on which region you're in. Northern Indiana gardeners should plan around a Apr 25 - May 10 last frost, while those in Southern Indiana can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Lettuce Growing Guide National planting guide with all states Indiana Planting Calendar All plants for Indiana Lettuce in Alabama Alabama planting dates Lettuce in Alaska Alaska planting dates Lettuce in Arizona Arizona planting dates Lettuce 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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