Weeds and Invasive Plants in Ventura County
(Click above to go to Weeds home page)
Bull Thistle
Cirsium vulgare (Savi) Ten.
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Mature
Plant
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Regrowth from Crown |
Seedling |
Flower
Head and Fruit |
Photos courtesy of Bill B. Fischer, Farm Advisor Emeritus, University of California, Cooperative Extension.