By Laurie Zitterkopf, Nebraska Extension Master Gardener
Ideally, wait until after the first frost to harvest sweet potatoes- this concentrates the sugars. Once frost hits, harvest immediately to keep any decay from spreading aboveground to below ground. Cure your sweet potato roots – a three-step process; dry on the ground, cure for 10 to 14 days with a temp of 85 degrees Fahrenheit and 85 percent relative humidity, and store at 55 degrees Fahrenheit. Properly cured sweet potatoes should keep the entire winter. One sweet potato plant will yield at least two pounds.