When to plant sweet corn in zone 4a
In zone 4a, the last spring frost usually comes around May 12 and the first fall frost around Sep 21. Here is when to plant sweet corn.
Sow in the bedMay 26
Start pickingAug 9
Your sweet corn calendar for zone 4a
- May 26: Sow sweet corn seeds in the bed
- Aug 9: Start picking sweet corn
Plant in a block, not one row, so the plants pollinate each other.
Spacing in a raised bed: 4 plants per square foot.
These dates are estimates from the average frost dates for zone 4a. Your local frost dates may be a week or two different. If a late cold snap is forecast, wait a few days.
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