When to plant sweet potatoes 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 potatoes.
Plant in the bedMay 29
Start pickingSep 6
Your sweet potato calendar for zone 4b
- May 29: Plant sweet potatoes in the bed
- Sep 6: Start picking sweet potatoes
Plant rooted cuttings ("slips") once the soil is warm. Loves hot summers.
Spacing in a raised bed: 1 plant per 2 × 2 ft.
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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