In moderate or cold climates, potatoes can stay in the ground until the soil freezes in late fall or early winter. Some folks have success heavily mulching (with mulch like straw, wood chips, or shredded leaves) the patch to keep the soil from freezing and dig potatoes all winter long.
Can you leave potatoes in the ground for next year?
Yes, you can actually grow potatoes from last year's crop. If you left some tubers in the ground over the winter after last year's harvest, however, don't use these as seed potatoes. If they do sprout, pull them up, as they will probably result in weak plants that produce small and inferior crops.
How long can I keep potatoes in the ground?
"With proper storage, well-matured potatoes will stay in good condition for seven to eight months," Mosley said. When storage temperatures exceed 45 degrees, potatoes should keep for two to three months, but sprouting and shriveling may occur.
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