how to winter geraniums

Keeping geraniums over winter?
How do you keep Geraniums over winter? i have heard that some people put them in their garages during the winter. Are they put in water? Are the roots included or cut off?
Hi. I do this every year. I remove the geraniums from the garden and or pots and shake off any excess ground really well. Stick the whole thing, (flowers and leaves,and roots still attached) in a paper bag.Close the top of the bag and store it in a cool place. Do not allow to freeze. Forget about it until spring. Then return the alien looking plant to your garden (after frost is over) or in a pot ,Water it well and wait. It will be like magic. Prune where necessary after you see green sprouting for a while. You must be patient. Good luck!
i brought in my hanging outdoor geraniums for winter