Harvesting Sweet Potatoes - Knowledgebase Question

Brownsville, IN
Question by Jeff7040
September 6, 1998
I have planted sweet potatoes, Centennial, and would like to know when it is time to dig them. Do you wait til
the vines die as with regular potatoes or wait til the first frost or what? My vines are still very lush and green.


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Answer from NGA
September 6, 1998

0

You can harvest sweet potatoes as soon as the 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. Your average frost date is the end of September, so plan to harvest them before that. (Or, 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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