The plant grows to 91 cm tall, is perennial, and spreads by both seeds and underground rhizome. Stems of older plants are woody. The stem and undersides of larger leaf veins are covered with spines. Leaves are alternate, elliptic-oblong to oval, 6.4 to 11.4 cm long, and each is irregularly lobed or coarsely toothed. Both surfaces are covered with fine hairs. Leaves smell like potatoes when crushed. The flowers have five petals and are usually white or purple with yellow centers, though there is a blue variant that resembles the tomato flower. The fruits also resemble tomatoes. The immature fruit is dark green with light green stripes, turning yellow and wrinkled as it matures. Each fruit contains around 60 seeds.
found growing in pastures, roadsides, railroad margins, and in disturbed areas and waste ground. It flowers throughout the summer, from April to October.