Growing Potatoes

Growing Potatoes

I found some potatoes that were under my cabinet and they were already growing, so I thought that I would plant them. The problem is that I'm not sure how to plant them. I feel foolish asking this but are these the tops or the roots? Can anyone please help? I've enclosed a pic so you all can see what I'm talking about. Thanks Photobucket
advice on coverlets

advice on coverlets

plant id

plant id

Help with weed identification

Help with weed identification

Blue oysters fruiting in my back yard…

Blue oysters fruiting in my back yard…

dormant or dead?

dormant or dead?

weird THING killing my plants >_<

weird THING killing my plants >_<