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The City of Portland, Oregon

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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Suite 1000, Portland, OR 97204

13. Blessed Milk Thistle

Blessed Milk Thistle (Silybum marianum)

blessed milk thistle

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

blessed milk thistle

Photos by Mitch Bixby