Bull thistle, Cirsium vulgare (Savi) Ten., non-native
- a dicot in the Asteraceae family -

 
flower and bud of the bull thistle has many thorns

bull thistle flower and bud - thistles are in the same family with artichokes

bull thistle plant has thousands of hairfine thorns

bull thistle feathery seeds


bull thistle single seed

The Tulare County Ag Department introduced the hairy weavil in February 2001 in an effort to control this noxios weed. Below is the sack of bull thistle seed heads that contain the eggs of the weevil. If you see these, please leave them alone. Thanks.

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