Warm-Season Vegetable

When to Plant Corn (Sweet) in Massachusetts

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

The Short Answer

In Massachusetts, corn (sweet) planting dates vary by region. In Western Massachusetts, your average last frost is around May 1 - May 20, while Coastal/Cape sees its last frost around Apr 15 - May 1. Since corn (sweet) are frost-sensitive, direct sow 2 weeks after your last frost date. Rocky, acidic New England soils. Glacial deposits. Raised beds popular. Amend heavily with compost.

Massachusetts Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Western Massachusetts 5b, 6a May 1 - May 20 Sep 20 - Oct 10
Central Massachusetts 5b, 6a May 1 - May 15 Sep 25 - Oct 10
Coastal/Cape 6b, 7a Apr 15 - May 1 Oct 15 - Nov 1

Corn (Sweet) Planting Schedule for Massachusetts

Western Massachusetts (Zones 5b, 6a)

Average last frost: May 1 - May 20 · Average first frost: Sep 20 - Oct 10

Direct Sow
2 wks after frost

Central Massachusetts (Zones 5b, 6a)

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

Direct Sow
2 wks after frost

Coastal/Cape (Zones 6b, 7a)

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

Direct Sow
2 wks after frost

Growing Corn (Sweet) in Massachusetts

Corn (Sweet) in Massachusetts's Climate

Your climate is classic corn country. Direct sow from mid-May. Succession plant through late June for harvests from July through September. Moderate summer temperatures produce long-lasting ears without the heat stress that shortens quality in southern states. European corn borer and corn earworm are the primary pests.

Soil Considerations for Massachusetts

Rocky, acidic New England soils. Glacial deposits. Raised beds popular. Amend heavily with compost. Make sure soil has warmed to at least 60°F before planting corn (sweet) outside.

Massachusetts Climate & Growing Season

Four seasons. Maritime influence moderates coastal areas. Cold winters. Good growing season with adequate moisture. 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 Massachusetts: Western Massachusetts (5b, 6a) has a last frost around May 1 - May 20, while Coastal/Cape (6b, 7a) sees frost end around Apr 15 - May 1. 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 Massachusetts, but your exact planting dates depend on which region you're in. Western Massachusetts gardeners should plan around a May 1 - May 20 last frost, while those in Coastal/Cape 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 Massachusetts Planting Calendar All plants for Massachusetts 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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