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Milkthistle

Silybum

Also called Milk thistle

Milkthistle
Photo: Iorsh at en.wikipedia, Public domain

Silybum is a small genus of two thistle species, mainly the blessed milk thistle (S. marianum), grown as an annual or biennial with large, white-veined leaves and pink-purple flower heads. Its seeds yield silymarin, used in herbal liver supplements.

Family
Asteraceae (Daisy family)
Light
Full sun
Water
Water sparingly once established; they tolerate dry conditions and resent wet soil.
Soil
Well-drained, poor to moderately fertile soil; tolerates lime and sandy ground.
Temperature
Hardy to around -10 °C; prefers mild to warm summers.
How easy
Easy
Safety
Not known to be toxic

About

Silybum (milk thistle) is a genus of two species of thistles in the family Asteraceae. The plants are native to the Mediterranean regions of Europe, North Africa, and the Middle East. One species has been introduced elsewhere, including in North America. The name "milk thistle" derives from a feature of the leaves, which are prominently banded with splashes of white. Historically, these milky bands were said to be Mother Mary's milk, and this is the origin of another common name, St. Mary's thistle. The most widespread species is Silybum marianum.

Claims have been made since ancient times that the active flavanoid-lignan (flavanolignan) group of constituents, called silymarin, contained only in the seed shell has liver-protective and regenerative properties, as well as antioxidant effects. Chemical, pharmacological, and safety research started in Germany in the 1950s.

Other Silybum plants

Blessed milkthistle

Text excerpted from the Wikipedia article Silybum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

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