The Q&A Archives: sweet potato

Question: when do I know that there are any sweet potatoes in the grown?

Answer: You can harvest sweet potatoes as soon as the plant leaves start to yellow, but the longer a crop is left in the ground, the higher the yield. If frost blackens the vines, though, the tubers will quickly rot so watch the local weather reports and harvest just before the first predicted frost. Tubers can grow a foot or more from the plant, so harvest carefully. Dry the tubers in the sun for several hours, then move them to a well-ventilated spot at keep at 85F - 90F for 10-15 days. Properly cured sweet potatoes will keep for several months.

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