Warm-Season Vegetable

When to Plant Corn (Sweet) in Nebraska

Nothing says summer like fresh sweet corn. Plant in blocks (not rows) for proper pollination.

The Short Answer

In Nebraska, corn (sweet) planting dates vary by region. In Northern/Western Nebraska, your average last frost is around May 5 - May 20, while Eastern Nebraska sees its last frost around Apr 25 - May 10. Since corn (sweet) are frost-sensitive, direct sow 2 weeks after your last frost date. Rich prairie soils in east. Sandy soils in Sandhills region. Loess deposits along Missouri River.

Nebraska Frost Dates

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

Region	Zones	Last Frost (Spring)	First Frost (Fall)
Northern/Western Nebraska	4a, 4b	May 5 - May 20	Sep 20 - Oct 5
Eastern Nebraska	5a, 5b	Apr 25 - May 10	Oct 1 - Oct 15

Corn (Sweet) Planting Schedule for Nebraska

Northern/Western Nebraska (Zones 4a, 4b)

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

Direct Sow

2 wks after frost

Eastern Nebraska (Zones 5a, 5b)

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

Direct Sow

2 wks after frost

Growing Corn (Sweet) in Nebraska

Corn (Sweet) in Nebraska's Climate

Sweet corn needs warm soil and warm nights but matures quickly enough for most cold-climate gardens. Direct sow when soil reaches 60°F — typically late May. Choose early varieties (60-65 days) for the shortest seasons. Plant in blocks of at least 4×4 for wind pollination. Raccoons are the universal corn nemesis — electric fencing is the only reliable deterrent.

Soil Considerations for Nebraska

Rich prairie soils in east. Sandy soils in Sandhills region. Loess deposits along Missouri River. Make sure soil has warmed to at least 60°F before planting corn (sweet) outside.

Nebraska Climate & Growing Season

Continental climate. Hot summers, cold winters. Adequate growing season in east. Drier in west — irrigation may be needed. Corn (Sweet) 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 Nebraska: Northern/Western Nebraska (4a, 4b) has a last frost around May 5 - May 20, while Eastern Nebraska (5a, 5b) sees frost end around Apr 25 - May 10. This difference matters for corn (sweet) — transplant timing shifts by several weeks across the state.

Growing Tips

Plant in blocks of at least 4x4 for wind pollination. Corn is a heavy feeder — amend soil with compost before planting.

Companion Planting

Plant corn (sweet) alongside these companions for better growth:

Beans Squash Melons

Keep corn (sweet) away from:

Tomatoes

The Bottom Line

Corn (Sweet) can be grown successfully across Nebraska, but your exact planting dates depend on which region you're in. Northern/Western Nebraska gardeners should plan around a May 5 - May 20 last frost, while those in Eastern Nebraska can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

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