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
Growing Potatoes

Marigold seeds

Marigold seeds

pretty places post 1.

pretty places post 1.

winter garden florals

winter garden florals

Dendrobium care

Dendrobium care

New (Empty) Apartment

New (Empty) Apartment

Tropical Lilly in full bloom

Tropical Lilly in full bloom