Silybum is a genus of flowering plants in the daisy family Asteraceae. The most well-known species within this genus is Silybum marianum, commonly known as milk thistle. Native to the Mediterranean region, milk thistle is widely recognized for its distinctive purple flowers and spiny leaves that feature white veins. Historically, it has been used for its medicinal properties, particularly in supporting liver health. The active ingredient in milk thistle, silymarin, is believed to have antioxidant, antiviral, and anti-inflammatory properties. In addition to its medicinal uses, Silybum species are sometimes grown ornamentally for their striking appearance. Despite their beneficial qualities, they can become invasive in some areas, outcompeting native vegetation. Overall, Silybum is a plant genus that combines aesthetic appeal with significant therapeutic potential.