You should be able to start new plants from the root. Just put it in a container and submerge the lower part in water. When you have new starts growing on it with roots started, just break them off and root to start a new plant. Ornamental sweet potatoes can be handled just like the food varietys,but, they usually aren't as good to eat.

Thank you so much. I can't belive that I found this "huge" potato. I'll try to root it.

You also can save it at room temperature over the winter and bury it in soil next spring. It should put up several vines that you can then tip and root.

Agree with merrygardens-------thats what I did last year with mine---infact, they were in a pot on top of the dryer all winter, and grew better than the ones I bought this past spring.