
When to plant potatoes 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 potatoes.
Sow in the bedApr 28
Start pickingJul 27
Your potato calendar for zone 4a
- Apr 28: Plant seed potatoes in the bed
- Jul 27: Start picking potatoes
Plant seed potatoes 4 inches deep. Pile soil around the stems as they grow.
Spacing in a raised bed: 1 plant 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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