In addition to the flower buds of milk thistle, which are comparable to artichokes in culinary way, the large, wavy leaves with numerous thorns are also edible. The thorns must be removed, of course. The leaf vegetable prepared in this way is edible raw and cooked. Peeled and overnight watered (reduces bitterness) stems can be steamed and eaten as vegetables. Today, milk thistle is cultivated as a medically effective plant.
The often biennial plants form a leaf rosette in the first year, which can have a diameter of more than one meter, but usually remains smaller. An important characteristic of milk thistle is the white marbling along the leaf nerve and the white, net-like fluffing of the stems. The numerous trivial names often refer to milk and Mary and have their origin in a legend, according to which the white coloration should come from the milk of the mother of Jesus.