When to Plant Corn in Alaska
Alaska spans USDA hardiness 1a to 8b (zones 1a to 8b 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 1a · Zone 1b · Zone 2a · Zone 2b · Zone 3a · Zone 3b · Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b · Zone 7a · Zone 7b · Zone 8a · Zone 8b
Corn planting calendar for Alaska, Zone 1a
Average last spring frost
May 24
Average first fall frost
August 25
Direct sow
Jun 7
Corn needs about 75 to 110 days depending on the variety to mature — longer than Zone 1a typically stays frost-free, so it likely won't reliably ripen there outdoors without a head start indoors or season extension.
Corn planting calendar for Alaska, Zone 1b
Average last spring frost
May 29
Average first fall frost
August 28
Direct sow
Jun 12
Corn needs about 75 to 110 days depending on the variety to mature — longer than Zone 1b typically stays frost-free, so it likely won't reliably ripen there outdoors without a head start indoors or season extension.
Corn planting calendar for Alaska, Zone 2a
Average last spring frost
May 24
Average first fall frost
September 5
Direct sow
Jun 7
Corn needs about 75 to 110 days depending on the variety to mature — longer than Zone 2a typically stays frost-free, so it likely won't reliably ripen there outdoors without a head start indoors or season extension.
Corn planting calendar for Alaska, Zone 2b
Average last spring frost
May 30
Average first fall frost
September 6
Direct sow
Jun 13
Corn needs about 75 to 110 days depending on the variety to mature — longer than Zone 2b typically stays frost-free, so it likely won't reliably ripen there outdoors without a head start indoors or season extension.
Corn planting calendar for Alaska, Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
Direct sow
Jun 13
Corn needs about 75 to 110 days depending on the variety to mature — longer than Zone 3a typically stays frost-free, so it likely won't reliably ripen there outdoors without a head start indoors or season extension. Full zone 3 guide (both 3a and 3b) →
Corn planting calendar for Alaska, Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Direct sow
Jun 3
Projected first harvest
Sep 3
Most corn mature in about 75 to 110 days depending on the variety. Full zone 3 guide (both 3a and 3b) →
Corn planting calendar for Alaska, 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 Alaska, 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 Alaska, 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 Alaska, 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 Alaska, 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) →
Corn planting calendar for Alaska, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Direct sow
May 4
Projected first harvest
Aug 4
Most corn mature in about 75 to 110 days depending on the variety. Full zone 6 guide (both 6a and 6b) →
Corn planting calendar for Alaska, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Direct sow
Apr 29
Projected first harvest
Jul 30
Most corn mature in about 75 to 110 days depending on the variety. Full zone 7 guide (both 7a and 7b) →
Corn planting calendar for Alaska, Zone 7b
Average last spring frost
April 10
Average first fall frost
October 30
Direct sow
Apr 24
Projected first harvest
Jul 25
Most corn mature in about 75 to 110 days depending on the variety. Full zone 7 guide (both 7a and 7b) →
Corn planting calendar for Alaska, Zone 8a
Average last spring frost
April 1
Average first fall frost
November 10
Direct sow
Apr 15
Projected first harvest
Jul 16
Most corn mature in about 75 to 110 days depending on the variety. Full zone 8 guide (both 8a and 8b) →
Corn planting calendar for Alaska, Zone 8b
Average last spring frost
March 20
Average first fall frost
November 20
Direct sow
Apr 3
Projected first harvest
Jul 4
Most corn mature in about 75 to 110 days depending on the variety. Full zone 8 guide (both 8a and 8b) →
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
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