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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

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13. Blessed Milk Thistle

blessed milk thistleBlessed Milk Thistle (Silybum marianum)

  • Creamy white veins cover its foliage
  • Large (2 to 3 inches in diameter) flower heads
  • Thistle-like purple bristles

Photos by Mitch Bixby



blessed milk thistle