When should I plant Corn in Zone 4a?

Direct sow Corn outdoors around May 12. Harvest around Aug 5.

What is the last frost date for Zone 4a?

The average last spring frost date for Zone 4a is May 5. The first fall frost averages Oct 1, giving a 149-day growing season.

Yes. Corn needs 85 days to harvest. Zone 4a has a 149-day growing season, which is sufficient. You can plant up to 4 successions.

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Zone 4a has cold winters and a moderate growing season. Timing is key for Corn in this zone. Last frost: May 5. First frost: Oct 1.

Outdoor

Harvest

May 12Oct 1

Season: May 5 – Oct 1 (149 days) · Succession: plant every 2 weeks (up to 4x)

Zone4a

Last FrostMay 5

First FrostOct 1

Season Length149 days

Days to Harvest85

SunFull Sun

Frost ToleranceNone

Spacing4/sqft (6" apart)

Direct sow Corn seeds outdoors around May 12. Soil temperature should be at least 60°F. Space at 4/sqft (6" apart).

First harvest approximately Aug 5 (~85 days from planting). Continue harvesting until first frost (Oct 1).

✅ Beans✅ Squash✅ Cucumbers✅ Peas✅ Pumpkins

❌ Tomatoes

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Track Corn from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.