Blessed Thistle

Botanical Name: Cnicua benedictus Family: Compositae

Common name(s): Blessed thistle, Holy thistle


  • Annual; herbaceous | Zone 5-9 | 10-30 inches tall | Hairy leaves and stems. Stems are 5-sided. Yellow flowers with spider-web like hairs in them, April – September
  • Full sun | Dry, stony, waste soil


Harvest aerial parts while in flower and seeds in the autumn.


Infusion: Pour 1 cup of boiling water over 1 teaspoons of the dried herb. Steep for 10-15 minutes. Drink 3x/day.

Tincture: 1-2ml 3x/day

External: Apply as a poultice to promote wound healing


Constituents: bitter glycoside (cnicin), essential oil, flavonoids, mucilage, tannin

Actions: Alterative, antibacterial, antiseptic, astringent, bitter, diaphoretic, emetic, emmenagogue, expectorant, galactagogue, hemostatic, stomachic,tonic,stimulant, vulnerary

Uses: stomach and liver issues, appetite stimulant, diarrhea, indigestion, fever, jaundice, hepatitis, blood clots, bleeding, abnormal periods, lactation

Cautions: Large doses may cause vomiting, and it can be used for that purpose


Sweet, bitter, cool


  • The Way of Herbs, Michael Tierra
  • Holistic Herbal, David Hoffmann
  • A Modern Herbal, M. Grieve
  • Eastern/Central Medicinal Plants and Herbs, Foster and Duke
  • photo credit: henna lion blessed thistle via photopin (license)

This is another plant listed for reproductive issues in my herbal studies, but when I researched, only A Modern Herbal mentioned it as one of the best herb for lactation. And The Way of Herbs says since abnormal periods are usually accompanied by liver issues, so it is typically added to reproductive formulas. Seems like one of the major use for this herb outside of lactation is as an appetite stimulant.

Also, other thistles, particularly milk thistle, have similar actions.

PS The actions listed are all the ones mentioned across my sources. There are a lot of them!