Cool-Season Vegetable

When to Plant Lettuce in Pennsylvania

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

The Short Answer

Pennsylvania's strong tradition of kitchen gardening and farmers markets has made lettuce a cornerstone crop. The state's temperate climate produces two excellent growing windows — spring and fall — with the Philadelphia region's mild conditions supporting a particularly long fall-into-winter season. Pennsylvania Dutch markets have featured fresh greens for generations, and today's gardeners carry on that tradition with expanded variety choices.

Pennsylvania Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Pennsylvania 5a, 5b, 6a May 5 - May 20 Sep 20 - Oct 5
Central Pennsylvania 5b, 6a, 6b Apr 25 - May 10 Oct 1 - Oct 15
Philadelphia Region 7a, 7b Apr 5 - Apr 20 Oct 15 - Nov 5

Lettuce Planting Schedule for Pennsylvania

Northern Pennsylvania (Zones 5a, 5b, 6a)

Average last frost: May 5 - May 20 · Average first frost: Sep 20 - Oct 5

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

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

Philadelphia Region (Zones 7a, 7b)

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

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 Pennsylvania

State-Specific Growing Tips

Southeast PA: sow from late March through May for spring, and August through October for fall — the fall season often produces better lettuce because declining temperatures mean slower bolting. Central PA: sow from mid-April through May and again in August. Northern PA: sow from early May through September — the cool Poconos summer allows extended lettuce production. Cold frames extend the fall harvest in all regions — southeastern PA gardeners can harvest fresh lettuce through December and into January with minimal protection.

Recommended Varieties for Pennsylvania

For spring: Black Seeded Simpson (very early, 45 days), Buttercrunch, and Romaine. For fall: Winter Density, Rouge d'Hiver, and Arctic King (extremely cold-hardy). Penn State Extension's variety trials provide region-specific recommendations. Baby lettuce mixes are popular at Pennsylvania farmers markets.

Common Challenges in Pennsylvania

Bolting in June-July heat (especially in southeastern PA). Slugs are abundant in Pennsylvania's spring rains — particularly problematic in the shaded, moist conditions many gardeners use to extend lettuce production. Rabbit damage is common in rural and suburban areas. Downy mildew appears during cool, wet springs.

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 in Pennsylvania with proper attention to regional frost dates and local growing conditions. Timing varies across the state — Northern Pennsylvania gardeners work with a last frost around May 5 - May 20, while Philadelphia Region sees frost end around Apr 5 - Apr 20. 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

Lettuce Growing Guide National planting guide with all states Pennsylvania Planting Calendar All plants for Pennsylvania 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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