As a tropical plant it prefers warmer temperatures.
Sweet potato vine care in winter.
To grow a sweet potato vine as an annual allow it to die back in the winter and then replant in the spring after the last frost date.
Plants can also be brought indoors and treated as houseplants.
Then cut back the vine to just a couple of inches and spread a thick layer of mulch around the container to act as a blanket to protect the roots.
Sweet potato vines can be overwintered indoors from tubers or cuttings.
However depending on your growing zone it can be planted at other times of year.
Most of the time the sweet potato plant is planted in the spring.
If a frost is in the forecast water the sweet potato vines thoroughly.
The one season in which it s generally not advisable to plant sweet potato vines is the winter.
If you prefer to save the tubers for replanting next season.
Store dormant tubers in a cool dry place and replant in spring.
Heeling in sweet potato vines over winter if your region doesn t often receive sustained freezes you can simply bury the container in which the vines grow in mounded soil.
At this point you can leave the container all winter or you can pot them up and enjoy them as indoor plants until spring.