Sweet Potato = Houseplant? Please explain how (and which end, pieces, etc.) in a chalice of...

Please explain how (and which end, pieces, etc.) in a chalice of water in the kitchen that will grow those wonderful houseplants I see them showing on TV...thanks...
How do I preserve the skin on my...
Answers:    It's the pointy end. Just cut sour about a 2-3 inch section of the pointy bring to a close. Suspend with toothpicks on the edge of the chalice vase/jar or whatever you are using so the pointy end-tip is just contained by the water. Should sprout new roots within a few days, then new shoots will follow. Sometimes you can hold the whole sweet potoato plant and use it if it is small enough. We did this lots times when I was a kid, but I've never shown my girls how to do it. Maybe now is the right time..!
How do i maintain my christman tree green...
The ending that the stem was attached to is the top. The bottom is usually bigger. Put the sweet potato (bottom side down) in a like-size cup jar, like a used mayo jar, and fill it beside water to the top. They make stunning vines and I have one right now. I love "indirect its hair" (the long vines) around the plant. Looks beautiful and thick. Mine also stays outside, so they must be summer-hardy, too. A sweet potato make a cheap, easy-to-maintain, healthy, beautiful vine plant.
Looking for a rose?
Put four to six toothpicks around the circumference of the potato, and suspend the pointed back in a container of water (I used a coffee can). Make sure it get sunlight, and roots should develop in about 1-2 weeks, beside stems and leaves sprouting soon afterwards. It really is a pretty, easy-to-grow plant. It may even flower for you if the conditions are right. Good luck!