12 July 2012

Wildflower - Bull Thistle

The Bull Thistle (Cirsium vulgare) is another plant that farmers and landowners have very little love for. This member of the Aster family (Asteraceae) is native to Europe and has become an invasive weed in North America.



As with many of the non-native invasive weeds, insects such as this Eastern Tiger Swallowtail (Papilio glaucus) are attracted to the Bull Thistle.



A bee covered with pollen on the Bull Thistle flower.



A close-up view of the Bull Thistle flower.




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