When to Plant Corn in Wisconsin
Wisconsin spans USDA hardiness 4a to 6a (zones 4a to 6a on this page). Plant corn by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a
Corn planting calendar for Wisconsin, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Direct sow
May 29
Projected first harvest
Aug 29
Most corn mature in about 75 to 110 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Corn planting calendar for Wisconsin, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Direct sow
May 24
Projected first harvest
Aug 24
Most corn mature in about 75 to 110 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Corn planting calendar for Wisconsin, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Direct sow
May 19
Projected first harvest
Aug 19
Most corn mature in about 75 to 110 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Corn planting calendar for Wisconsin, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Direct sow
May 14
Projected first harvest
Aug 14
Most corn mature in about 75 to 110 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Corn planting calendar for Wisconsin, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Direct sow
May 9
Projected first harvest
Aug 9
Most corn mature in about 75 to 110 days depending on the variety. Full zone 6 guide (both 6a and 6b) →
Not sure which half-zone you're in? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
4 varieties of corn in the HomeSown library. Tap any for its full grow guide.
Common problems with corn
What to watch for, with identification and treatment for each
🌱 Grow corn with a calendar built for your exact yard
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