Potato fruits are a succulent but inedible spherical, yellow-green berry, up to 4cm across. Underground, the edible root forms a tuber that can be a range of colours, sizes and shapes, depending on the cultivated variety (cultivar).

Potato plants grow up to 1m tall with hairy stems and leaves divided into around four leaflet pairs. Flowers can be white, pink, purple or blue with yellow centres; grow on stalks around 3cm long; and measure about 2.5cm across.