DibbleWhen to plant Sweet Corn
Sow corn a week after last frost in warm soil. Plant in blocks of several short rows, not one long row, for good pollination.
When to plant Sweet Corn by zone
| Zone | Start seeds indoors | Sow or transplant | Harvest |
|---|---|---|---|
| Zone 3 | not needed | May 22 | August 5 |
| Zone 4 | not needed | May 17 | July 31 |
| Zone 5 | not needed | May 7 | July 21 |
| Zone 6 | not needed | April 28 | July 12 |
| Zone 7 | not needed | April 17 | July 1 |
| Zone 8 | not needed | April 4 | June 18 |
| Zone 9 | not needed | March 8 | May 22 |
| Zone 10 | not needed | February 7 | April 23 |
| Zone 11 | not needed | January 8 | March 24 |
These dates use typical frost dates for each zone. Dibble tunes them to your exact ZIP and lets you adjust frost dates for your own yard.
Companion plants
Good neighbors for Sweet Corn:
Better kept apart:
Family and rotation
Sweet Corn is in the grasses family. Corn is a heavy nitrogen feeder, follow with legumes to restore the soil. Learn about crop rotation.
Related crops
Tomato
When to plantPepper
When to plantPotato
When to plantOnion
When to plantGarlic
When to plantLettuce
When to plantQuestions
When should I plant sweet corn?
It depends on your zone. Sweet Corn is a tender crop, so the timing follows your last spring frost. Look up your zone in the table below for exact start, sow, and harvest dates, or open Dibble and enter your ZIP to get your own calendar.
How long does sweet corn take to grow?
About 75 days from sowing to the first harvest, with a picking window of roughly 10 days after that.
What grows well with sweet corn?
Good companions include Bean (bush), squash, Cucumber. Keep it away from Tomato.
Plant at the right time this season
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