When to plant sweet corn in zone 4b
In zone 4b, the last spring frost usually comes around May 8 and the first fall frost around Sep 28. Here is when to plant sweet corn.
Sow in the bedMay 22
Start pickingAug 5
Your sweet corn calendar for zone 4b
- May 22: Sow sweet corn seeds in the bed
- Aug 5: 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 4b. 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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