Milk thistle was originally grown in Austria, Hungary and Argentina. The plant itself grows to between 20 and 150 cm in height. The leaves are about 8 mm long and have very sharp thorns. The fruit grow to approximately 4 cm in size, are black and shiny and exhibit a somewhat furry 15-20 mm long "hair growth".
Today, milk thistle is found mainly in the Mediterranean. The fruits ripen in August and are then cut, harvested and cleaned. Milk thistle seeds are similar to sunflower seeds and can be eaten or mixed according to taste into cereal or yogurt.