Do Sweet Potato Vines Come Back Every Year. The pig will tear it up much better and faster than the potatoes. In a few days you should see roots.
Overwintering Ornamental Sweet Potatoes as Tubers If you lack space or motivation to care for a vine over winter you can always dig up and store the tubers. Weed the sweet potato beds regularly starting 2 weeks after planting. Store dormant tubers in a cool dry place and replant in spring.
Ive left sweet potato in the ground.
Grown and cared for like average houseplants these attractive vines add a little something extra to the home or patio. Water regularly especially during mid-summer. After a hard frost a sweet potato vine Ipomoea batatas usually look like something the cat left out in the rain limp rotten and dead but as long as the roots survive it will come back in the spring. Take cuttings several weeks before your average first frost date and place in water.

