How to grow sweet potato vine indoors

How To :

• Place the sweet potato in a container of water.
• Keep the top 1/3 of the potato exposed by placing toothpicks into the sides.
• The pointed end should be down in the water.
• In a few weeks a vine with several stems will begin to sprout.
• The stems are weak; tie the stems to a stake.
• Fertilize about once a month.

From : Grow a Sweet Potato Vine