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FAQ #13454

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I planted sweet potatoes and they are still green. When can I dig them up?

Related resource areas: Gardens, Lawns & Landscapes


Let them go as long as possible - harvest when the vines are killed by frost. They need a long growing season, so hope for a late first frost.

To decide on harvest date, a sample of roots should be dug (usually by hand). U.S. No. 1 yield is maximized when a few jumbo roots are produced. At this stage of growth, more U.S. No. 1 (medium sized and maximum priced) and fewer canners (smallest sized and lowest priced) are produced, which results in the highest income from the crop.

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