Warm-Season Vegetable

When to Plant Corn (Sweet) in Vermont

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

The Short Answer

In Vermont, corn (sweet) planting dates vary by region. In Northern Vermont, your average last frost is around May 20 - Jun 5, while Southern Vermont sees its last frost around May 5 - May 20. Since corn (sweet) are frost-sensitive, direct sow 2 weeks after your last frost date. Rocky, acidic soils typical of New England. Glacial deposits. Thin mountain soils. Raised beds very popular.

Vermont Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Vermont 3b, 4a May 20 - Jun 5 Sep 5 - Sep 20
Central Vermont 4a, 4b, 5a May 10 - May 25 Sep 15 - Oct 1
Southern Vermont 4b, 5a, 5b May 5 - May 20 Sep 20 - Oct 5

Corn (Sweet) Planting Schedule for Vermont

Northern Vermont (Zones 3b, 4a)

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

Direct Sow
2 wks after frost

Central Vermont (Zones 4a, 4b, 5a)

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

Direct Sow
2 wks after frost

Southern Vermont (Zones 4b, 5a, 5b)

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

Direct Sow
2 wks after frost

Growing Corn (Sweet) in Vermont

Corn (Sweet) in Vermont'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 Vermont

Rocky, acidic soils typical of New England. Glacial deposits. Thin mountain soils. Raised beds very popular. Make sure soil has warmed to at least 60°F before planting corn (sweet) outside.

Vermont Climate & Growing Season

Short growing season. Cold winters. Cool summers. Long summer days help compensate. Season extension techniques valuable. 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 Vermont: Northern Vermont (3b, 4a) has a last frost around May 20 - Jun 5, while Southern Vermont (4b, 5a, 5b) sees frost end around May 5 - May 20. 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 Vermont, but your exact planting dates depend on which region you're in. Northern Vermont gardeners should plan around a May 20 - Jun 5 last frost, while those in Southern Vermont can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Corn (Sweet) Growing Guide National planting guide with all states Vermont Planting Calendar All plants for Vermont Corn (Sweet) in Alabama Alabama planting dates Corn (Sweet) in Alaska Alaska planting dates Corn (Sweet) in Arizona Arizona planting dates Corn (Sweet) 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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