Warm-Season Vegetable

When to Plant Cucumbers in Delaware

Cool, crisp, and perfect for salads and pickling. Cucumbers thrive in warm weather and produce abundantly.

The Short Answer

In Delaware, cucumbers planting dates vary by region. In Northern Delaware, your average last frost is around Apr 10 - Apr 25, while Southern Delaware sees its last frost around Apr 1 - Apr 15. Since cucumbers are frost-sensitive, start seeds indoors 3 weeks before your last frost, then transplant outside 2 weeks after frost danger has passed. Sandy soils in south, clay loam in north. Generally well-drained. Slightly acidic.

Delaware Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Delaware 7a Apr 10 - Apr 25 Oct 10 - Oct 25
Southern Delaware 7b Apr 1 - Apr 15 Oct 20 - Nov 5

Cucumbers Planting Schedule for Delaware

Northern Delaware (Zones 7a)

Average last frost: Apr 10 - Apr 25 · Average first frost: Oct 10 - Oct 25

Start Seeds Indoors
3 wks before frost
Transplant Outside
2 wks after frost
Direct Sow
2 wks after frost

Southern Delaware (Zones 7b)

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

Start Seeds Indoors
3 wks before frost
Transplant Outside
2 wks after frost
Direct Sow
2 wks after frost

Growing Cucumbers in Delaware

Cucumbers in Delaware's Climate

Cucumbers thrive in your warm summer months. Direct sow or transplant from mid-May. Production peaks in July-August. Provide trellising for climbing types — vertical growing improves air circulation and reduces disease in the humid conditions common across the Midwest and mid-Atlantic. Succession plant in late June for harvest through September.

Soil Considerations for Delaware

Sandy soils in south, clay loam in north. Generally well-drained. Slightly acidic. Make sure soil has warmed to at least 60°F before planting cucumbers outside.

Delaware Climate & Growing Season

Moderate climate with maritime influence. Good growing conditions for a wide range of vegetables. Cucumbers cannot tolerate any frost, so wait until all frost danger has passed before transplanting outside. Watch local forecasts carefully in spring.

Growing season length varies across Delaware: Northern Delaware (7a) has a last frost around Apr 10 - Apr 25, while Southern Delaware (7b) sees frost end around Apr 1 - Apr 15. This difference matters for cucumbers — transplant timing shifts by several weeks across the state.

Growing Tips

Trellis for straighter fruits and better air circulation. Pick regularly to encourage more production.

Companion Planting

Plant cucumbers alongside these companions for better growth:

Beans Corn Peas Sunflowers

Keep cucumbers away from:

Potatoes Aromatic Herbs

The Bottom Line

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

Related Guides

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

Ready to Start Planting?

Enter your zip code and pick your plant. We'll tell you exactly when to plant, start seeds, and harvest — based on where you live.

Find Your Planting Dates